161808161 (number)

161808161 is an odd 9-digits composite number following 161808160 and preceding 161808162. In scientific notation, it is written as 1.61808161 × 10^8. The sum of its digits is 32. It has a total of 3 prime factors and 8 positive divisors. There are 151772400 positive integers (up to 161808161) that are relatively prime to 161808161.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.61808161 × 10^8
Engineering notation 1.61808161 × 10^6

Prime Factorization of 161808161

Prime Factorization 19 × 101 × 84319

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 161808161
Product of the distinct prime numbers

The prime factorization of 161808161 is 19 × 101 × 84319. Since it has a total of 3 prime factors.

Most popular turbo-numbers

4, 6, 49, 53, 392, 768, 1142, 2346, 78640, 46831, 197566, 514370, 6161669, 5493979, 49853958, 22615674, 908101125, 244246288, 803569786, 6331416382

Basic calculations (n = 161808161)

Multiplication

n×y
n×2 323616322
n×3 485424483
n×4 647232644
n×5 809040805

Division

n÷y
n÷2 80904080.5
n÷3 53936053.666667
n÷3 40452040.25
n÷5 32361632.2

Exponentiation

ny
n2 26181880966201921
n3 4.236442010662E+24
n4 6.8549089092837E+32
n5 1.1091802044337E+41

Nth Root

y√n
2√n 12720.38368132
3√n 544.92091100464
4√n 112.78467839791
5√n 43.832887860775

Divisors of 161808161

1, 19, 101, 1919, 84319, 1602061, 8516219, 161808161

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 -161808160
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 161808161 can be divided by 8 positive divisors. The sum of these divisors (counting 161808161) is 1, the average is 0.125.

Base conversion 161808161

Base System Value
2 Binary 1001101001001111111100100001
3 Ternary 102021110201001212
4 Quaternary 21221033330201
5 Quinary 312410330121
6 Senary 24020035505
8 Octal 1151177441
10 Decimal 161808161
12 Duodecimal 46232b95
16 Hexadecimal 9a4ff21
20 Vigesimal 2ab6081
36 Base36 2oc3z5

Cryptographic Hash Functions

md5 5d50d30dd6b38c7f09d32b1fa1f349de
sha1 004efb3ecca7098ccf5b228832b892ddc81f4298
sha256 92d8b3451dd982b51980b4ebd246b7424a7136ba3205c916c0af81b3be346be7
sha512 4f1e3c4d422de145d1180119881cc172d9166675270a5287e121b6a672d577278a341bec969ca08e67089629a97a7d2c636197209dca0f80eff889f062a49db2
ripemd-160 59124bf264d49a72d858bf21b8ece58af677a9b5

161808161 as geometric shapes

Circle

Radius = n
Diameter 323616322
Circumference 1016670659.7769
Area 8.2252804900582E+16

Sphere

Radius = n
Volume 1.7745566797407E+25
Surface area 3.2901121960233E+17
Circumference 1016670659.7769

Square

Length = n
Perimeter 647232644
Area 26181880966201921
Diagonal 228831295.78885

Cube

Length = n
Surface area 157091285797211526
Volume 4.236442010662E+24
Space diagonal 280259955.93128

Equilateral Triangle

Length = n
Perimeter 485424483
Area 1.1337087017796E+16
Altitude 140129977.96564

Triangular Pyramid

Length = n
Surface area 1.1337087017796E+16
Volume 4.9926947897378E+23
Height 76277098.596283