18993861 (number)

18993861 is an odd 8-digits composite number following 18993860 and preceding 18993862. In scientific notation, it is written as 1.8993861 × 10^7. The sum of its digits is 45. It has a total of 4 prime factors and 12 positive divisors. There are 12531456 positive integers (up to 18993861) that are relatively prime to 18993861.

Interesting facts

Basic properties

Name

Name eighteen million nine hundred ninety-three thousand eight hundred sixty-one

Notation

Scientific notation 1.8993861 × 10^7
Engineering notation 1.8993861 × 10^6

Prime Factorization of 18993861

Prime Factorization 3 × 3 × 97 × 21757

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 4
Total number of prime factors
rad Radical 6331287
Product of the distinct prime numbers

The prime factorization of 18993861 is 3 × 3 × 97 × 21757. Since it has a total of 4 prime factors.

Most popular turbo-numbers

10, 2, 80, 68, 758, 536, 9170, 8079, 95980, 56907, 179118, 689734, 703130, 7231040, 63514120, 75421386, 699402646, 906711296, 799609141, 8128623557

Basic calculations (n = 18993861)

Multiplication

n×y
n×2 37987722
n×3 56981583
n×4 75975444
n×5 94969305

Division

n÷y
n÷2 9496930.5
n÷3 6331287
n÷3 4748465.25
n÷5 3798772.2

Exponentiation

ny
n2 360766755687321
n3 6.8523536109459E+21
n4 1.3015265200916E+29
n5 2.4721013810433E+36

Nth Root

y√n
2√n 4358.1946950544
3√n 266.81142262248
4√n 66.016624383971
5√n 28.557662130115

Divisors of 18993861

1, 3, 9, 97, 291, 873, 21757, 65271, 195813, 2110429, 6331287, 18993861

12 divisors

τ Total Divisors 12
Total number of the positive divisors of n
σ Sum of Divisors 1
Sum of all the positive divisors of n
s Aliquot Sum -18993860
Sum of the proper positive divisors of n
A Arithmetic Mean 0.083333333333333
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 12
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 18993861 can be divided by 12 positive divisors. The sum of these divisors (counting 18993861) is 1, the average is 0.083333333333333.

Base conversion 18993861

Base System Value
2 Binary 1001000011101001011000101
3 Ternary 1022201222200100
4 Quaternary 1020131023011
5 Quinary 14330300421
6 Senary 1515034313
8 Octal 110351305
10 Decimal 18993861
12 Duodecimal 643b999
16 Hexadecimal 121d2c5
20 Vigesimal 5ie4d1
36 Base36 bb3r9

Cryptographic Hash Functions

md5 e5bf2dedde21bda47383933cf776f36a
sha1 41c932cccbda7b6ccaf6c8ff054b61484aa716bd
sha256 d763ef9ff80ee52fbdcaae31b9f309d86b537c5a85446d265dc54c05bb0340a2
sha512 d89c193dc53a6cc76306b9d6c38f3f354f5b98d8a362d2602ef8745c191bd01ae10bd75d1d64c5581c5de53ffaeafa9d733d072d6b940aaad7be9ac28d2887cc
ripemd-160 87e0f57d31a86c9e80983b9f5b7dcc4d7ad898d0

18993861 as geometric shapes

Circle

Radius = n
Diameter 37987722
Circumference 119341948.36181
Area 1.1333821893267E+15

Sphere

Radius = n
Volume 2.8703071685263E+22
Surface area 4.5335287573068E+15
Circumference 119341948.36181

Square

Length = n
Perimeter 75975444
Area 360766755687321
Diagonal 26861375.828029

Cube

Length = n
Surface area 2164600534123926
Volume 6.8523536109459E+21
Space diagonal 32898332.283901

Equilateral Triangle

Length = n
Perimeter 56981583
Area 1.5621658763306E+14
Altitude 16449166.141951

Triangular Pyramid

Length = n
Surface area 1.5621658763306E+14
Volume 8.0755761756467E+20
Height 8953791.9426765