161844991 (number)

161844991 is an odd 9-digits composite number following 161844990 and preceding 161844992. In scientific notation, it is written as 1.61844991 × 10^8. The sum of its digits is 43. It has a total of 4 prime factors and 16 positive divisors. There are 123162480 positive integers (up to 161844991) that are relatively prime to 161844991.

Interesting facts

Basic properties

Name

Name one hundred sixty-one million eight hundred forty-four thousand nine hundred ninety-one

Notation

Scientific notation 1.61844991 × 10^8
Engineering notation 1.61844991 × 10^6

Prime Factorization of 161844991

Prime Factorization 49 × 11 × 43 × 6983

Composite number
ω Distinct Factors 4
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 161844991
Product of the distinct prime numbers

The prime factorization of 161844991 is 49 × 11 × 43 × 6983. Since it has a total of 4 prime factors.

Most popular turbo-numbers

4, 8, 42, 98, 761, 142, 2328, 710, 50981, 45469, 299160, 546390, 7623884, 8107623, 28286220, 44201212, 129137334, 561506752, 9607546819, 1688141811

Basic calculations (n = 161844991)

Multiplication

n×y
n×2 323689982
n×3 485534973
n×4 647379964
n×5 809224955

Division

n÷y
n÷2 80922495.5
n÷3 53948330.333333
n÷3 40461247.75
n÷5 32368998.2

Exponentiation

ny
n2 26193801111790081
n3 4.2393355051935E+24
n4 6.8611521668402E+32
n5 1.1104431106919E+41

Nth Root

y√n
2√n 12721.83127541
3√n 544.96225196568
4√n 112.7910957275
5√n 43.834883085599

Divisors of 161844991

1, 11, 43, 49, 473, 539, 2107, 6983, 23177, 76813, 300269, 342167, 3302959, 3763837, 14713181, 161844991

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 -161844990
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 161844991 can be divided by 16 positive divisors. The sum of these divisors (counting 161844991) is 1, the average is 0.0625.

Base conversion 161844991

Base System Value
2 Binary 1001101001011000111011111111
3 Ternary 102021112120120221
4 Quaternary 21221120323333
5 Quinary 312413014431
6 Senary 24020522211
8 Octal 1151307377
10 Decimal 161844991
12 Duodecimal 46250367
16 Hexadecimal 9a58eff
20 Vigesimal 2abac9b
36 Base36 2ocwe7

Cryptographic Hash Functions

md5 2b4d64bfbe9bff726ca0cf585d20556f
sha1 58e9212f571b407c65bcb39c23a6ba8e296f59dd
sha256 bea8868c5513f58b7504421f77f549a01efe7ecd3da19f7b70310d979ca58942
sha512 e417e9f3c85b464d474bc73abfe58f288a71315e0498a34155722c0e3d01ec8dd0dbc043204115ec35c725cd51539c1f72f2c093096c912d3a0a7510ccdb1d3f
ripemd-160 c4cee2c6b01bf1277a2d6f43e93e0f1e89f8156d

161844991 as geometric shapes

Circle

Radius = n
Diameter 323689982
Circumference 1016902069.4918
Area 8.2290253142392E+16

Sphere

Radius = n
Volume 1.7757687038958E+25
Surface area 3.2916101256957E+17
Circumference 1016902069.4918

Square

Length = n
Perimeter 647379964
Area 26193801111790081
Diagonal 228883381.27435

Cube

Length = n
Surface area 157162806670740486
Volume 4.2393355051935E+24
Space diagonal 280323747.36253

Equilateral Triangle

Length = n
Perimeter 485534973
Area 1.1342248592244E+16
Altitude 140161873.68126

Triangular Pyramid

Length = n
Surface area 1.1342248592244E+16
Volume 4.9961048057453E+23
Height 76294460.424784