161898985 (number)

161898985 is an odd 9-digits composite number following 161898984 and preceding 161898986. In scientific notation, it is written as 1.61898985 × 10^8. The sum of its digits is 55. It has a total of 3 prime factors and 8 positive divisors. There are 128742960 positive integers (up to 161898985) that are relatively prime to 161898985.

Interesting facts

Basic properties

Name

Name one hundred sixty-one million eight hundred ninety-eight thousand nine hundred eighty-five

Notation

Scientific notation 1.61898985 × 10^8
Engineering notation 1.61898985 × 10^6

Prime Factorization of 161898985

Prime Factorization 5 × 167 × 193891

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 161898985
Product of the distinct prime numbers

The prime factorization of 161898985 is 5 × 167 × 193891. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 161898985)

Multiplication

n×y
n×2 323797970
n×3 485696955
n×4 647595940
n×5 809494925

Division

n÷y
n÷2 80949492.5
n÷3 53966328.333333
n÷3 40474746.25
n÷5 32379797

Exponentiation

ny
n2 26211281344030225
n3 4.2435798451479E+24
n4 6.8703126969591E+32
n5 1.1122966522703E+41

Nth Root

y√n
2√n 12723.953198594
3√n 545.02284784836
4√n 112.8005017657
5√n 43.837807494792

Divisors of 161898985

8 divisors

τ Total Divisors 8
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -161898984
Sum of the proper positive divisors of n
A Arithmetic Mean 0.125
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 8
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 161898985 can be divided by 8 positive divisors. The sum of these divisors (counting 161898985) is 1, the average is 0.125.

Base conversion 161898985

Base System Value
2 Binary 1001101001100110000111101001
3 Ternary 102021122022122201
4 Quaternary 21221212013221
5 Quinary 312421231420
6 Senary 24022020201
8 Octal 1151460751
10 Decimal 161898985
12 Duodecimal 46277661
16 Hexadecimal 9a661e9
20 Vigesimal 2abh795
36 Base36 2oe221

Cryptographic Hash Functions

md5 38831c05465e18a6aa88e8c489492785
sha1 313614b385606a5411aef608f09a75a35a8d3860
sha256 57e919b163a038c8113438a11d1b7265c4f55da1263353f03ea0c4ce41f01ed1
sha512 849a30fd5241c547344baa53896067f07235b9279a59c34f56161e2a05bb19420881cffd3de943e89c14b4385f4e67df6ff19ccf061a981e99307f9b08ed1a2a
ripemd-160 078fcb155a8cfac5685f2e2287b5e872fea18e65

161898985 as geometric shapes

Circle

Radius = n
Diameter 323797970
Circumference 1017241323.7993
Area 8.2345168911581E+16

Sphere

Radius = n
Volume 1.7775465688585E+25
Surface area 3.2938067564632E+17
Circumference 1017241323.7993

Square

Length = n
Perimeter 647595940
Area 26211281344030225
Diagonal 228959740.32144

Cube

Length = n
Surface area 157267688064181350
Volume 4.2435798451479E+24
Space diagonal 280417267.71383

Equilateral Triangle

Length = n
Perimeter 485696955
Area 1.1349817754836E+16
Altitude 140208633.85692

Triangular Pyramid

Length = n
Surface area 1.1349817754836E+16
Volume 5.0011068083511E+23
Height 76319913.440479