161520981 (number)

161520981 is an odd 9-digits composite number following 161520980 and preceding 161520982. In scientific notation, it is written as 1.61520981 × 10^8. The sum of its digits is 33. It has a total of 4 prime factors and 16 positive divisors. There are 103812800 positive integers (up to 161520981) that are relatively prime to 161520981.

Interesting facts

Basic properties

Name

Name one hundred sixty-one million five hundred twenty thousand nine hundred eighty-one

Notation

Scientific notation 1.61520981 × 10^8
Engineering notation 1.61520981 × 10^6

Prime Factorization of 161520981

Prime Factorization 3 × 29 × 1151 × 1613

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 161520981
Product of the distinct prime numbers

The prime factorization of 161520981 is 3 × 29 × 1151 × 1613. Since it has a total of 4 prime factors.

Most popular turbo-numbers

2, 7, 71, 47, 672, 499, 815, 125, 94062, 74067, 973351, 122527, 4051855, 8178425, 13770834, 75972385, 626860190, 657101559, 3822784316, 6436566061

Basic calculations (n = 161520981)

Multiplication

n×y
n×2 323041962
n×3 484562943
n×4 646083924
n×5 807604905

Division

n÷y
n÷2 80760490.5
n÷3 53840327
n÷3 40380245.25
n÷5 32304196.2

Exponentiation

ny
n2 26089027303202361
n3 4.213925283349E+24
n4 6.8063734562724E+32
n5 1.0993721177095E+41

Nth Root

y√n
2√n 12709.090486734
3√n 544.59834165608
4√n 112.73460199395
5√n 43.817317725501

Divisors of 161520981

1, 3, 29, 87, 1151, 1613, 3453, 4839, 33379, 46777, 100137, 140331, 1856563, 5569689, 53840327, 161520981

16 divisors

τ Total Divisors 16
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -161520980
Sum of the proper positive divisors of n
A Arithmetic Mean 0.0625
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 16
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 161520981 can be divided by 16 positive divisors. The sum of these divisors (counting 161520981) is 1, the average is 0.0625.

Base conversion 161520981

Base System Value
2 Binary 1001101000001001110101010101
3 Ternary 102020221010010120
4 Quaternary 21220021311111
5 Quinary 312322132411
6 Senary 24005542153
8 Octal 1150116525
10 Decimal 161520981
12 Duodecimal 46114959
16 Hexadecimal 9a09d55
20 Vigesimal 2a9a291
36 Base36 2o5ydx

Cryptographic Hash Functions

md5 73ba8ab636cc687e04e6a5cae01bd696
sha1 2d2e15b7a25d850c2ac6b980b8d9a8d287213300
sha256 e07f6050e987436b61cb7bc80d48395ca6471ddaecd5832e382d608bae612891
sha512 c1e66e30658accddbd6c06d5f3bd2637a29e1743a5837754ed12a8c05c0f719f380aefd7a25aa9705123b02ae02adefed58bcc82ada19129181eb0d7307c5005
ripemd-160 9b46f0ccb2b6d90180efece593c859d16ae191ad

161520981 as geometric shapes

Circle

Radius = n
Diameter 323041962
Circumference 1014866254.6204
Area 8.1961096515044E+16

Sphere

Radius = n
Volume 1.7651248950594E+25
Surface area 3.2784438606018E+17
Circumference 1014866254.6204

Square

Length = n
Perimeter 646083924
Area 26089027303202361
Diagonal 228425161.93801

Cube

Length = n
Surface area 156534163819214166
Volume 4.213925283349E+24
Space diagonal 279762545.58037

Equilateral Triangle

Length = n
Perimeter 484562943
Area 1.12968802023E+16
Altitude 139881272.79018

Triangular Pyramid

Length = n
Surface area 1.12968802023E+16
Volume 4.9661585721159E+23
Height 76141720.646002