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

18981091 (number)

18981091 is an odd 8-digits composite number following 18981090 and preceding 18981092. In scientific notation, it is written as 1.8981091 × 10^7. The sum of its digits is 37. It has a total of 3 prime factors and 8 positive divisors. There are 18483720 positive integers (up to 18981091) that are relatively prime to 18981091.

Interesting facts

18981091 has 8 divisors, whose sum is 19482624
The reverse of 18981091 is 19018981
Previous prime number is 223

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1

Name

Name	eighteen million nine hundred eighty-one thousand ninety-one

Notation

Scientific notation	1.8981091 × 10^7
Engineering notation	1.8981091 × 10^6

Prime Factorization of 18981091

Prime Factorization 47 × 223 × 1811

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	18981091	Product of the distinct prime numbers

The prime factorization of 18981091 is 47 × 223 × 1811. Since it has a total of 3 prime factors.

Most popular turbo-numbers

5, 9, 98, 78, 895, 979, 4483, 4777, 61000, 17557, 951868, 171021, 1494842, 4226106, 89069624, 29497711, 995217406, 769878933, 9553743200, 3600440849

Basic calculations (n = 18981091)

Multiplication

n×y

n×2	37962182
n×3	56943273
n×4	75924364
n×5	94905455

Division

n÷y

n÷2	9490545.5
n÷3	6327030.3333333
n÷3	4745272.75
n÷5	3796218.2

Exponentiation

n^y

n²	360281815550281
n³	6.8385419266051E+21
n⁴	1.2980298661621E+29
n⁵	2.463802301034E+36

Nth Root

^y√n

²√n	4356.7293925604
³√n	266.75161477672
⁴√n	66.005525469921
⁵√n	28.553821105287

Divisors of 18981091

1, 47, 223, 1811, 10481, 85117, 403853, 18981091

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-18981090	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 18981091 can be divided by 8 positive divisors. The sum of these divisors (counting 18981091) is 1, the average is 0.125.

Base conversion 18981091

Base	System	Value
2	Binary	1001000011010000011100011
3	Ternary	1022201100011101
4	Quaternary	1020122003203
5	Quinary	14324343331
6	Senary	1514455231
8	Octal	110320343
10	Decimal	18981091
12	Duodecimal	6434517
16	Hexadecimal	121a0e3
20	Vigesimal	5icceb
36	Base36	batwj

Cryptographic Hash Functions

md5	8d4237353bf8feee8448c80cc686aa8e
sha1	7662d8e64afbc372616bcd46583c1c13c07e8954
sha256	572fbea079c84fe7fb89945d45a9fb259c8d32b14c620bb9834d9ec9c6aa2775
sha512	20581282ba43baad47fcc317a54d60260c7be0ee5325048526c7a55f4774acba8894f99057b5cb534f98d0b0bca94893b6a0e43ac1b45f6b28827a1c39743d08
ripemd-160	f3ac40224b8f2d2f7af56bab4d01a9c8a221f9a5

18981091 as geometric shapes

Circle

Radius = n

Diameter	37962182
Circumference	119261712.08544
Area	1.1318587049548E+15

Sphere

Radius = n

Volume	2.8645217437184E+22
Surface area	4.527434819819E+15
Circumference	119261712.08544

Square

Length = n

Perimeter	75924364
Area	360281815550281
Diagonal	26843316.320838

Cube

Length = n

Surface area	2161690893301686
Volume	6.8385419266051E+21
Space diagonal	32876213.995088

Equilateral Triangle

Length = n

Perimeter	56943273
Area	1.5600660239406E+14
Altitude	16438106.997544

Triangular Pyramid

Length = n

Surface area	1.5600660239406E+14
Volume	8.0592989495516E+20
Height	8947772.106946