Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

161808993 (number)

161808993 is an odd 9-digits composite number following 161808992 and preceding 161808994. In scientific notation, it is written as 1.61808993 × 10^8. The sum of its digits is 45. It has a total of 2 prime factors and 4 positive divisors. There are 107872656 positive integers (up to 161808993) that are relatively prime to 161808993.

Interesting facts

161808993 has 4 divisors, whose sum is 179787780
The reverse of 161808993 is 399808161
Previous prime number is 9

Basic properties

Is Prime? no
Number parity odd
Number length 9
Sum of Digits 45
Digital Root 9

Name

Name	one hundred sixty-one million eight hundred eight thousand nine hundred ninety-three

Notation

Scientific notation	1.61808993 × 10^8
Engineering notation	1.61808993 × 10^6

Prime Factorization of 161808993

Prime Factorization 9 × 17978777

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	161808993	Product of the distinct prime numbers

The prime factorization of 161808993 is 9 × 17978777. Since it has a total of 2 prime factors.

Most popular turbo-numbers

7, 2, 75, 19, 218, 993, 1407, 8066, 61440, 17472, 862688, 909038, 669871, 6382109, 31450944, 42673565, 442366413, 397053503, 3715604103, 1632499712

Basic calculations (n = 161808993)

Multiplication

n×y

n×2	323617986
n×3	485426979
n×4	647235972
n×5	809044965

Division

n÷y

n÷2	80904496.5
n÷3	53936331
n÷3	40452248.25
n÷5	32361798.6

Exponentiation

n^y

n²	26182150215674049
n³	4.236507360973E+24
n⁴	6.8550498991612E+32
n⁵	1.109208721148E+41

Nth Root

^y√n

²√n	12720.416384694
³√n	544.92184497776
⁴√n	112.78482337928
⁵√n	43.832932937472

Divisors of 161808993

1, 9, 17978777, 161808993

4 divisors

τ	Total Divisors	4	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-161808992	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.25	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	1	Returns the nth root of the product of n divisors
H	Harmonic Mean	4	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 161808993 can be divided by 4 positive divisors. The sum of these divisors (counting 161808993) is 1, the average is 0.25.

Base conversion 161808993

Base	System	Value
2	Binary	1001101001010000001001100001
3	Ternary	102021110202012200
4	Quaternary	21221100021201
5	Quinary	312410341433
6	Senary	24020043413
8	Octal	1151201141
10	Decimal	161808993
12	Duodecimal	46233569
16	Hexadecimal	9a50261
20	Vigesimal	2ab629d
36	Base36	2oc4m9

Cryptographic Hash Functions

md5	e4306f8a01e2aed9718950adc97ed7bb
sha1	0e2f043886c99ae735ee95c8b55cc1364704f7f0
sha256	9d3ed8bef2fdf8f8059b55407c4b3110cd89e393ac510febe8b0f7db86e465a8
sha512	b65f3c0945cbab1da1b38ad0061df19a2aaadf043e3264d2522aaf17e3e3382a8d7c13e51b140a00eae1a073c78f98689b7035378da227e2a0a266be1bd3dbdb
ripemd-160	35aab1e9be4007031a6691604a66587db8b0e30d

161808993 as geometric shapes

Circle

Radius = n

Diameter	323617986
Circumference	1016675887.3871
Area	8.2253650772746E+16

Sphere

Radius = n

Volume	1.7745840536149E+25
Surface area	3.2901460309098E+17
Circumference	1016675887.3871

Square

Length = n

Perimeter	647235972
Area	26182150215674049
Diagonal	228832472.41453

Cube

Length = n

Surface area	157092901294044294
Volume	4.236507360973E+24
Space diagonal	280261396.99756

Equilateral Triangle

Length = n

Perimeter	485426979
Area	1.1337203606237E+16
Altitude	140130698.49878

Triangular Pyramid

Length = n

Surface area	1.1337203606237E+16
Volume	4.9927718058178E+23
Height	76277490.804844