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

81491609 (number)

81491609 is an odd 8-digits prime number following 81491608 and preceding 81491610. In scientific notation, it is written as 8.1491609 × 10^7. The sum of its digits is 38. It has a total of 1 prime factors and 2 positive divisors. There are 81491608 positive integers (up to 81491609) that are relatively prime to 81491609.

Interesting facts

81491609 has 2 divisors, whose sum is 81491610
The reverse of 81491609 is 90619418
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 38
Digital Root 2

Name

Name	eighty-one million four hundred ninety-one thousand six hundred nine

Notation

Scientific notation	8.1491609 × 10^7
Engineering notation	8.1491609 × 10^6

Prime Factorization of 81491609

Prime Factorization 81491609

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	81491609	Product of the distinct prime numbers

The prime factorization of 81491609 is 81491609. Since it has a total of 1 prime factors.

Most popular turbo-numbers

7, 3, 94, 30, 404, 348, 7863, 6487, 42382, 9787, 612051, 603976, 6804607, 9487954, 92636458, 99399570, 525289375, 743395773, 6376668867, 7300906123

Basic calculations (n = 81491609)

Multiplication

n×y

n×2	162983218
n×3	244474827
n×4	325966436
n×5	407458045

Division

n÷y

n÷2	40745804.5
n÷3	27163869.666667
n÷3	20372902.25
n÷5	16298321.8

Exponentiation

n^y

n²	6640882337408881
n³	5.4117618685513E+23
n⁴	4.4101318219309E+31
n⁵	3.5938873807125E+39

Nth Root

^y√n

²√n	9027.2702961637
³√n	433.548443036
⁴√n	95.011948175815
⁵√n	38.214006976112

Divisors of 81491609

1, 81491609

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	81491610	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	40745805	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	9027.2703515515	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.9999999754576	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81491609 can be divided by 2 positive divisors. The sum of these divisors (counting 81491609) is 81491610, the average is 40745805.

Base conversion 81491609

Base	System	Value
2	Binary	100110110110111011010011001
3	Ternary	12200100012110202
4	Quaternary	10312313122121
5	Quinary	131330212414
6	Senary	12030351545
8	Octal	466673231
10	Decimal	81491609
12	Duodecimal	2335b5b5
16	Hexadecimal	4db7699
20	Vigesimal	1596909
36	Base36	1cinbt

Cryptographic Hash Functions

md5	96d4a3c897ea852ed42126af20d21678
sha1	c193e252e720ce4ab4b70e1175c499ba503025f7
sha256	be868024c3521480fc8d36a78791e0b647e33ff6d60f607e24208d180a51c631
sha512	e254e16458fffd6b7b5c37092172a77884b73150b7f5d44c169f70225b862cc8cef32cdf349bbd4e601991688cb95f7648824e807ef631337b30ecae76c33ba9
ripemd-160	06b1cc076c7fac3696149b777e1d607ac986ac50

81491609 as geometric shapes

Circle

Radius = n

Diameter	162983218
Circumference	512026880.32722
Area	2.0862947164558E+16

Sphere

Radius = n

Volume	2.2668735105624E+24
Surface area	8.3451788658232E+16
Circumference	512026880.32722

Square

Length = n

Perimeter	325966436
Area	6640882337408881
Diagonal	115246538.66741

Cube

Length = n

Surface area	39845294024453286
Volume	5.4117618685513E+23
Space diagonal	141147607.17854

Equilateral Triangle

Length = n

Perimeter	244474827
Area	2.8755864038697E+15
Altitude	70573803.589269

Triangular Pyramid

Length = n

Surface area	2.8755864038697E+15
Volume	6.377822525699E+22
Height	38415512.889135