161918897 (number)

161918897 is an odd 9-digits composite number following 161918896 and preceding 161918898. In scientific notation, it is written as 1.61918897 × 10^8. The sum of its digits is 50. It has a total of 4 prime factors and 12 positive divisors. There are 130622016 positive integers (up to 161918897) that are relatively prime to 161918897.

Interesting facts

Basic properties

Name

Name one hundred sixty-one million nine hundred eighteen thousand eight hundred ninety-seven

Notation

Scientific notation 1.61918897 × 10^8
Engineering notation 1.61918897 × 10^6

Prime Factorization of 161918897

Prime Factorization 7 × 17 × 17 × 80039

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 9524641
Product of the distinct prime numbers

The prime factorization of 161918897 is 7 × 17 × 17 × 80039. Since it has a total of 4 prime factors.

Most popular turbo-numbers

Basic calculations (n = 161918897)

Multiplication

n×y
n×2 323837794
n×3 485756691
n×4 647675588
n×5 809594485

Division

n÷y
n÷2 80959448.5
n÷3 53972965.666667
n÷3 40479724.25
n÷5 32383779.4

Exponentiation

ny
n2 26217729205696609
n3 4.2451457948311E+24
n4 6.8736932470324E+32
n5 1.1129808288758E+41

Nth Root

y√n
2√n 12724.735635761
3√n 545.04519110159
4√n 112.80396994681
5√n 43.838885766509

Divisors of 161918897

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -161918896
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 161918897 can be divided by 12 positive divisors. The sum of these divisors (counting 161918897) is 1, the average is 0.083333333333333.

Base conversion 161918897

Base System Value
2 Binary 1001101001101010111110110001
3 Ternary 102021200022222012
4 Quaternary 21221222332301
5 Quinary 312422401042
6 Senary 24022252305
8 Octal 1151527661
10 Decimal 161918897
12 Duodecimal 46287095
16 Hexadecimal 9a6afb1
20 Vigesimal 2abjh4h
36 Base36 2oehf5

Cryptographic Hash Functions

md5 753238c486fd7b5673ea48af25816efb
sha1 09fdb1d78aad8f7e29f3db84c9a638218a1b5a74
sha256 bb6978bb138d82f974f8533e4dd4d2130567e19ef1c23bd934a2923301df96b9
sha512 c56fbe4f3aba479cab3f1feae3bf8ce3822b1458fb69668f5f92cd55d93b48078584a0398bcbebf2526a006159d4f0851315eb9d25c8ae6c09dd87dab702e19b
ripemd-160 fcf91882ccbfd140993f7973a83ad3b226bd2244

161918897 as geometric shapes

Circle

Radius = n
Diameter 323837794
Circumference 1017366434.5851
Area 8.2365425466423E+16

Sphere

Radius = n
Volume 1.7782025123279E+25
Surface area 3.2946170186569E+17
Circumference 1017366434.5851

Square

Length = n
Perimeter 647675588
Area 26217729205696609
Diagonal 228987900.14189

Cube

Length = n
Surface area 157306375234179654
Volume 4.2451457948311E+24
Space diagonal 280451756.30951

Equilateral Triangle

Length = n
Perimeter 485756691
Area 1.1352609760837E+16
Altitude 140225878.15476

Triangular Pyramid

Length = n
Surface area 1.1352609760837E+16
Volume 5.002952297751E+23
Height 76329300.047297