161921907 (number)

161921907 is an odd 9-digits composite number following 161921906 and preceding 161921908. In scientific notation, it is written as 1.61921907 × 10^8. The sum of its digits is 36. It has a total of 2 prime factors and 4 positive divisors. There are 92526768 positive integers (up to 161921907) that are relatively prime to 161921907.

Interesting facts

Basic properties

Name

Name one hundred sixty-one million nine hundred twenty-one thousand nine hundred seven

Notation

Scientific notation 1.61921907 × 10^8
Engineering notation 1.61921907 × 10^6

Prime Factorization of 161921907

Prime Factorization 63 × 2570189

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 161921907
Product of the distinct prime numbers

The prime factorization of 161921907 is 63 × 2570189. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 10, 51, 69, 859, 730, 2903, 5840, 72525, 46477, 462353, 247041, 9093869, 6425735, 73674708, 47076437, 980410736, 9043727, 4913885227, 7052092078

Basic calculations (n = 161921907)

Multiplication

n×y
n×2 323843814
n×3 485765721
n×4 647687628
n×5 809609535

Division

n÷y
n÷2 80960953.5
n÷3 53973969
n÷3 40480476.75
n÷5 32384381.4

Exponentiation

ny
n2 26218703966516649
n3 4.2453825453268E+24
n4 6.8742043768384E+32
n5 1.1130842818054E+41

Nth Root

y√n
2√n 12724.853908788
3√n 545.04856846291
4√n 112.80449418701
5√n 43.83904875436

Divisors of 161921907

1, 63, 2570189, 161921907

4 divisors

τ Total Divisors 4
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -161921906
Sum of the proper positive divisors of n
A Arithmetic Mean 0.25
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 4
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 161921907 can be divided by 4 positive divisors. The sum of these divisors (counting 161921907) is 1, the average is 0.25.

Base conversion 161921907

Base System Value
2 Binary 1001101001101011101101110011
3 Ternary 102021200111002200
4 Quaternary 21221223231303
5 Quinary 312423000112
6 Senary 24022314243
8 Octal 1151535563
10 Decimal 161921907
12 Duodecimal 46288983
16 Hexadecimal 9a6bb73
20 Vigesimal 2ac04f7
36 Base36 2oejqr

Cryptographic Hash Functions

md5 6bce904ec435e761879a49408361dfca
sha1 e397aabb8d26ca7e20cdba386c45d3912e2d4fe8
sha256 0b7146484cc64502d6641c697cd4e64c6a116aa9cb1e2ef296dbdfb233a98f42
sha512 56383ffa6384b75662d3b685cca42e74e1c55902c9451e3daf3501ef2f0016d8bc883b722524d427d2078a127616e4e8fd124a9a8d188a233c8952aec5a40c30
ripemd-160 23c423170ee652b6f0fa1792820943064eed25b3

161921907 as geometric shapes

Circle

Radius = n
Diameter 323843814
Circumference 1017385346.9729
Area 8.2368487767854E+16

Sphere

Radius = n
Volume 1.7783016821436E+25
Surface area 3.2947395107142E+17
Circumference 1017385346.9729

Square

Length = n
Perimeter 647687628
Area 26218703966516649
Diagonal 228992156.92472

Cube

Length = n
Surface area 157312223799099894
Volume 4.2453825453268E+24
Space diagonal 280456969.78244

Equilateral Triangle

Length = n
Perimeter 485765721
Area 1.1353031844654E+16
Altitude 140228484.89122

Triangular Pyramid

Length = n
Surface area 1.1353031844654E+16
Volume 5.003231310886E+23
Height 76330718.974905