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

81492913 (number)

81492913 is an odd 8-digits prime number following 81492912 and preceding 81492914. In scientific notation, it is written as 8.1492913 × 10^7. The sum of its digits is 37. It has a total of 1 prime factors and 2 positive divisors. There are 81492912 positive integers (up to 81492913) that are relatively prime to 81492913.

Interesting facts

81492913 has 2 divisors, whose sum is 81492914
The reverse of 81492913 is 31929418
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 37
Digital Root 1

Name

Name	eighty-one million four hundred ninety-two thousand nine hundred thirteen

Notation

Scientific notation	8.1492913 × 10^7
Engineering notation	8.1492913 × 10^6

Prime Factorization of 81492913

Prime Factorization 81492913

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	81492913	Product of the distinct prime numbers

The prime factorization of 81492913 is 81492913. Since it has a total of 1 prime factors.

Most popular turbo-numbers

4, 6, 71, 6, 487, 579, 2619, 880, 33060, 19021, 377370, 381454, 1272395, 5940453, 46845347, 61510730, 72241157, 535938088, 6396542689, 885446786

Basic calculations (n = 81492913)

Multiplication

n×y

n×2	162985826
n×3	244478739
n×4	325971652
n×5	407464565

Division

n÷y

n÷2	40746456.5
n÷3	27164304.333333
n÷3	20373228.25
n÷5	16298582.6

Exponentiation

n^y

n²	6641094869225569
n³	5.4120216640255E+23
n⁴	4.4104141062054E+31
n⁵	3.5941749305097E+39

Nth Root

^y√n

²√n	9027.3425214733
³√n	433.55075552012
⁴√n	95.012328260459
⁵√n	38.214129272743

Divisors of 81492913

1, 81492913

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	81492914	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	40746457	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	9027.3425768606	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.999999975458	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81492913 can be divided by 2 positive divisors. The sum of these divisors (counting 81492913) is 81492914, the average is 40746457.

Base conversion 81492913

Base	System	Value
2	Binary	100110110110111101110110001
3	Ternary	12200100021021001
4	Quaternary	10312313232301
5	Quinary	131330233123
6	Senary	12030402001
8	Octal	466675661
10	Decimal	81492913
12	Duodecimal	23360301
16	Hexadecimal	4db7bb1
20	Vigesimal	1596c5d
36	Base36	1cioc1

Cryptographic Hash Functions

md5	087d2c2fcfd73c7113562ff8e4ff910f
sha1	c3bdb0468bc69f1298070d411ae7c219012d1673
sha256	73643e2e665b20fd623ae7ead5fc219c884852dee07db97d0d0984f9197a6256
sha512	7a67cac7867404999d5002c4d74041fca17d5db281b0094fccbb5747af4f5f19ef14e14d09c2817215bea2906ffb7f562fb6f58920ebdc662fbb92feb868387e
ripemd-160	c3edbb4ff720a2cdf7a919aea886c017ff481289

81492913 as geometric shapes

Circle

Radius = n

Diameter	162985826
Circumference	512035073.60086
Area	2.0863614852952E+16

Sphere

Radius = n

Volume	2.2669823334362E+24
Surface area	8.3454459411808E+16
Circumference	512035073.60086

Square

Length = n

Perimeter	325971652
Area	6641094869225569
Diagonal	115248382.80189

Cube

Length = n

Surface area	39846569215353414
Volume	5.4120216640255E+23
Space diagonal	141149865.77279

Equilateral Triangle

Length = n

Perimeter	244478739
Area	2.8756784328459E+15
Altitude	70574932.886395

Triangular Pyramid

Length = n

Surface area	2.8756784328459E+15
Volume	6.3781286976015E+22
Height	38416127.60063