81609613 is an odd 8-digits prime number following 81609612
and preceding 81609614 . In scientific notation, it is written as 8.1609613 × 10^7.
The sum of its digits is 34. It has a total of 1 prime factors and 2 positive divisors.
There are 81609612 positive integers (up to 81609613) that are relatively prime to 81609613.
81609613 has 2 divisors, whose sum is 81609614
The reverse of 81609613 is 31690618
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 34
Digital Root 7
Name
eighty-one million six hundred nine thousand six hundred thirteen
Scientific notation
8.1609613 × 10^7
Engineering notation
8.1609613 × 10^6
Prime Factorization
81609613
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
81609613
Product of the distinct prime numbers
The prime factorization of 81609613 is 81609613.
Since it has a total of 1 prime factors.
8 , 9 , 32 , 22 , 88 , 456 , 7892 , 7892 , 38239 , 31004 , 277057 , 138495 , 4767044 , 406800 , 28572925 , 58307032 , 411896481 , 123188435 , 6006284455 , 3197944991
n×2
163219226
n×3
244828839
n×4
326438452
n×5
408048065
n÷2
40804806.5
n÷3
27203204.333333
n÷3
20402403.25
n÷5
16321922.6
n2
6660128934009769
n3
5.4353054483464E+23
n4
4.4357317417634E+31
n5
3.6199835081713E+39
2 √n
9033.8039053325
3 √n
433.75760884924
4 √n
95.046325049065
5 √n
38.225067736997
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
81609614
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
40804807
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
9033.8039606801
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999754931
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 81609613 can be divided by 2 positive divisors.
The sum of these divisors (counting 81609613) is 81609614, the average is 40804807.
Base
System
Value
2
Binary
100110111010100001110001101
3
Ternary
12200120012100021
4
Quaternary
10313110032031
5
Quinary
131343001423
6
Senary
12033102141
8
Octal
467241615
10
Decimal
81609613
12
Duodecimal
233b7951
16
Hexadecimal
4dd438d
20
Vigesimal
15a140d
36
Base36
1cl6dp
md5
10952ef1f47278aa3b6136a4494958f0
sha1
becf79ce573bff7eb752b64b0458c998338e1983
sha256
e98aa09f32d5c93ff15c3be0e14567c38c8c62bdeeb3c2b4edad699f3c646935
sha512
24deec1ca842729e00ef0fcc5d64059427fc99429e00ef812909de48a6e3f40365b00cce7bb0e01b643913ee7375a0eabf7c12af8c78d8790c8a5b6e6673969f
ripemd-160
1f7c91247d67763dce7a93d0dc6fb0ffc44fcca9
Diameter
163219226
Circumference
512768321.32621
Area
2.0923412131046E+16
Volume
2.2767354222055E+24
Surface area
8.3693648524184E+16
Circumference
512768321.32621
Perimeter
326438452
Area
6660128934009769
Diagonal
115413421.52462
Surface area
39960773604058614
Volume
5.4353054483464E+23
Space diagonal
141351996.10203
Perimeter
244828839
Area
2.8839204246661E+15
Altitude
70675998.051017
Surface area
2.8839204246661E+15
Volume
6.4055689005765E+22
Height
38471140.508207