Max	9223372036854775807
25835	Positive integer
0b10001100	Binary number
01771452	Octal number
0x129abf	Hex number
5.012 * 10^7	Scientific notation
2^4 * 5	Factorized form
*	Random number

18385981 (number)

18385981 is an odd 8-digits composite number following 18385980 and preceding 18385982. In scientific notation, it is written as 1.8385981 × 10^7. The sum of its digits is 43. It has a total of 2 prime factors and 4 positive divisors. There are 18245500 positive integers (up to 18385981) that are relatively prime to 18385981.

Interesting facts

18385981 has 4 divisors, whose sum is 18526464
The reverse of 18385981 is 18958381
Previous prime number is 131

Basic properties

Is Prime? no
Number parity odd
Number length 8
Sum of Digits 43
Digital Root 7

Name

Name	eighteen million three hundred eighty-five thousand nine hundred eighty-one

Notation

Scientific notation	1.8385981 × 10^7
Engineering notation	1.8385981 × 10^6

Prime Factorization of 18385981

Prime Factorization 131 × 140351

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	18385981	Product of the distinct prime numbers

The prime factorization of 18385981 is 131 × 140351. Since it has a total of 2 prime factors.

Most popular turbo-numbers

4, 4, 32, 37, 847, 10, 1205, 4765, 14129, 21324, 123630, 157336, 7078493, 1770824, 65111440, 89161608, 271622532, 582316096, 6673456437, 2546261508

Basic calculations (n = 18385981)

Multiplication

n×y

n×2	36771962
n×3	55157943
n×4	73543924
n×5	91929905

Division

n÷y

n÷2	9192990.5
n÷3	6128660.3333333
n÷3	4596495.25
n÷5	3677196.2

Exponentiation

n^y

n²	338044297332361
n³	6.2152760279111E+21
n⁴	1.1427394695893E+29
n⁵	2.1010386175819E+36

Nth Root

^y√n

²√n	4287.8877084177
³√n	263.93415962179
⁴√n	65.481964756853
⁵√n	28.372484105983

Divisors of 18385981

1, 131, 140351, 18385981

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	-18385980	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 18385981 can be divided by 4 positive divisors. The sum of these divisors (counting 18385981) is 1, the average is 0.25.

Base conversion 18385981

Base	System	Value
2	Binary	1000110001000110000111101
3	Ternary	1021121002211021
4	Quaternary	1012020300331
5	Quinary	14201322411
6	Senary	1454024141
8	Octal	106106075
10	Decimal	18385981
12	Duodecimal	61a8051
16	Hexadecimal	1188c3d
20	Vigesimal	5ei4j1
36	Base36	ay2pp

Cryptographic Hash Functions

md5	28d0218cd69d6d1021f70504f9844641
sha1	7e71ebfbedb98208ea64d36f045c2f152abb5493
sha256	af12f7c49ef81dbf3f7341653458256a146840ce1c0fcddd23b2d8654b13502e
sha512	b04bdbf9fd88dba45c4856152bb012550335c11b8aeb3723c10f1d75b4985a26ba2b3269d06c572f767f22280eba716d23ee4d0bcfb07b921d5bf89bea283625
ripemd-160	24352a5145ff0224a6824b2e715e51b2eb341336

18385981 as geometric shapes

Circle

Radius = n

Diameter	36771962
Circumference	115522525.67728
Area	1.0619974810873E+15

Sphere

Radius = n

Volume	2.6034487345758E+22
Surface area	4.2479899243491E+15
Circumference	115522525.67728

Square

Length = n

Perimeter	73543924
Area	338044297332361
Diagonal	26001703.687734

Cube

Length = n

Surface area	2028265783994166
Volume	6.2152760279111E+21
Space diagonal	31845453.238996

Equilateral Triangle

Length = n

Perimeter	55157943
Area	1.4637747454714E+14
Altitude	15922726.619498

Triangular Pyramid

Length = n

Surface area	1.4637747454714E+14
Volume	7.3247730438036E+20
Height	8667234.562578