161801931 (number)

161801931 is an odd 9-digits composite number following 161801930 and preceding 161801932. In scientific notation, it is written as 1.61801931 × 10^8. The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors. There are 107143712 positive integers (up to 161801931) that are relatively prime to 161801931.

Interesting facts

Basic properties

Name

Name one hundred sixty-one million eight hundred one thousand nine hundred thirty-one

Notation

Scientific notation 1.61801931 × 10^8
Engineering notation 1.61801931 × 10^6

Prime Factorization of 161801931

Prime Factorization 3 × 149 × 361973

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 161801931
Product of the distinct prime numbers

The prime factorization of 161801931 is 3 × 149 × 361973. Since it has a total of 3 prime factors.

Most popular turbo-numbers

2, 8, 30, 99, 542, 892, 7818, 2850, 45036, 1448, 717146, 731530, 5376465, 8702632, 51256605, 85174382, 915791667, 234028220, 3911553273, 6618489237

Basic calculations (n = 161801931)

Multiplication

n×y
n×2 323603862
n×3 485405793
n×4 647207724
n×5 809009655

Division

n÷y
n÷2 80900965.5
n÷3 53933977
n÷3 40450482.75
n÷5 32360386.2

Exponentiation

ny
n2 26179864875328761
n3 4.2359526901473E+24
n4 6.8538532489047E+32
n5 1.1089666904634E+41

Nth Root

y√n
2√n 12720.138796413
3√n 544.9139173301
4√n 112.78359276248
5√n 43.832550321437

Divisors of 161801931

1, 3, 149, 447, 361973, 1085919, 53933977, 161801931

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 -161801930
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 161801931 can be divided by 8 positive divisors. The sum of these divisors (counting 161801931) is 1, the average is 0.125.

Base conversion 161801931

Base System Value
2 Binary 1001101001001110011011001011
3 Ternary 102021110101112010
4 Quaternary 21221032123023
5 Quinary 312410130211
6 Senary 24015551003
8 Octal 1151163313
10 Decimal 161801931
12 Duodecimal 4622b463
16 Hexadecimal 9a4e6cb
20 Vigesimal 2ab54gb
36 Base36 2obz63

Cryptographic Hash Functions

md5 8c9be903c6934fc0537435d362b72a11
sha1 4e9db27b9ef226812fd6a92e7ecea4bec25811ee
sha256 439f559d48745e56c58e8f3d4ef1cd583a7abe6262e57f9471346fd7cc8d5a84
sha512 15c8df7d94b01a091599588727fd552aac79aa80067c537c8854b684d3fa82cbd69b56fa4ca5aaaf85701cd5f74135aa8ad8be9ea25e071654da5205f29b9615
ripemd-160 67475000491958dd354bd27add7a2073bea710bc

161801931 as geometric shapes

Circle

Radius = n
Diameter 323603862
Circumference 1016631515.5325
Area 8.2246471164306E+16

Sphere

Radius = n
Volume 1.7743517136427E+25
Surface area 3.2898588465723E+17
Circumference 1016631515.5325

Square

Length = n
Perimeter 647207724
Area 26179864875328761
Diagonal 228822485.23836

Cube

Length = n
Surface area 157079189251972566
Volume 4.2359526901473E+24
Space diagonal 280249165.25475

Equilateral Triangle

Length = n
Perimeter 485405793
Area 1.1336214024839E+16
Altitude 140124582.62738

Triangular Pyramid

Length = n
Surface area 1.1336214024839E+16
Volume 4.9921181199809E+23
Height 76274161.746119