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

81491009 (number)

81491009 is an odd 8-digits prime number following 81491008 and preceding 81491010. In scientific notation, it is written as 8.1491009 × 10^7. The sum of its digits is 32. It has a total of 1 prime factors and 2 positive divisors. There are 81491008 positive integers (up to 81491009) that are relatively prime to 81491009.

Interesting facts

81491009 has 2 divisors, whose sum is 81491010
The reverse of 81491009 is 90019418
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5

Name

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

Notation

Scientific notation	8.1491009 × 10^7
Engineering notation	8.1491009 × 10^6

Prime Factorization of 81491009

Prime Factorization 81491009

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	81491009	Product of the distinct prime numbers

The prime factorization of 81491009 is 81491009. Since it has a total of 1 prime factors.

Most popular turbo-numbers

5, 3, 84, 77, 17, 85, 6964, 5342, 37398, 56087, 290641, 895408, 4874245, 7460293, 66221109, 78918626, 251181077, 754111660, 9897211197, 7951583541

Basic calculations (n = 81491009)

Multiplication

n×y

n×2	162982018
n×3	244473027
n×4	325964036
n×5	407455045

Division

n÷y

n÷2	40745504.5
n÷3	27163669.666667
n÷3	20372752.25
n÷5	16298201.8

Exponentiation

n^y

n²	6640784547838081
n³	5.4116423335493E+23
n⁴	4.4100019410805E+31
n⁵	3.5937550787061E+39

Nth Root

^y√n

²√n	9027.2370634652
³√n	433.54737900128
⁴√n	95.01177328871
⁵√n	38.21395070413

Divisors of 81491009

1, 81491009

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	81491010	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	40745505	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	9027.2371188531	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.9999999754574	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 81491009 can be divided by 2 positive divisors. The sum of these divisors (counting 81491009) is 81491010, the average is 40745505.

Base conversion 81491009

Base	System	Value
2	Binary	100110110110111010001000001
3	Ternary	12200100011122112
4	Quaternary	10312313101001
5	Quinary	131330203014
6	Senary	12030345105
8	Octal	466672101
10	Decimal	81491009
12	Duodecimal	2335b195
16	Hexadecimal	4db7441
20	Vigesimal	15967a9
36	Base36	1cimv5

Cryptographic Hash Functions

md5	2c7d9ef4271c58a3c24fbd7dac5b66e9
sha1	7e36be89ddab5df4f9edeaf1dc9c2bc6dcb72876
sha256	f71eea6dc4ff850b6f2e51db1a7ddbcb5e5263d37d8e1f68e360c779a498d010
sha512	fb6f2f833ebf7afec1ff2824869c03d52aa50a739c9be87654af5eff1b1f3ce01dc04b5dbedcedac3111e7ed2b0a5378779118abf28fd7171750cb88fce84dd4
ripemd-160	7acb4c3bd08d6f7caf1f8598aea8636a4d157aec

81491009 as geometric shapes

Circle

Radius = n

Diameter	162982018
Circumference	512023110.41604
Area	2.0862639949561E+16

Sphere

Radius = n

Volume	2.2668234398579E+24
Surface area	8.3450559798243E+16
Circumference	512023110.41604

Square

Length = n

Perimeter	325964036
Area	6640784547838081
Diagonal	115245690.13927

Cube

Length = n

Surface area	39844707287028486
Volume	5.4116423335493E+23
Space diagonal	141146567.94805

Equilateral Triangle

Length = n

Perimeter	244473027
Area	2.8755440597435E+15
Altitude	70573283.974026

Triangular Pyramid

Length = n

Surface area	2.8755440597435E+15
Volume	6.3776816523482E+22
Height	38415230.046423