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

181981 (number)

181981 is an odd 6-digits prime number following 181980 and preceding 181982. In scientific notation, it is written as 1.81981 × 10^5. The sum of its digits is 28. It has a total of 1 prime factors and 2 positive divisors. There are 181980 positive integers (up to 181981) that are relatively prime to 181981.

Interesting facts

181981 has 2 divisors, whose sum is 181982
The reverse of 181981 is 189181
Previous prime number is 1

Basic properties

Is Prime? yes
Number parity odd
Number length 6
Sum of Digits 28
Digital Root 1

Name

Name	one hundred eighty-one thousand nine hundred eighty-one

Notation

Scientific notation	1.81981 × 10^5
Engineering notation	1.81981 × 10^3

Prime Factorization of 181981

Prime Factorization 181981

Composite number

ω	Distinct Factors	1	Total number of distinct prime factors
Ω	Total Factors	1	Total number of prime factors
rad	Radical	181981	Product of the distinct prime numbers

The prime factorization of 181981 is 181981. Since it has a total of 1 prime factors.

Most popular turbo-numbers

7, 4, 89, 47, 150, 820, 6230, 2583, 27234, 51259, 784844, 629037, 7727004, 2081933, 21355081, 84636770, 335056930, 847843104, 5381238460, 770936759

Basic calculations (n = 181981)

Multiplication

n×y

n×2	363962
n×3	545943
n×4	727924
n×5	909905

Division

n÷y

n÷2	90990.5
n÷3	60660.333333333
n÷3	45495.25
n÷5	36396.2

Exponentiation

n^y

n²	33117084361
n³	6026680129099141
n⁴	1.0967412765736E+21
n⁵	1.9958607425214E+26

Nth Root

^y√n

²√n	426.59231122935
³√n	56.66853896159
⁴√n	20.654111242785
⁵√n	11.272109771831

Divisors of 181981

1, 181981

2 divisors

τ	Total Divisors	2	Total number of the positive divisors of n
σ	Sum of Divisors	181982	Sum of all the positive divisors of n
s	Aliquot Sum	1	Sum of the proper positive divisors of n
A	Arithmetic Mean	90991	Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G	Geometric Mean	426.593483307	Returns the nth root of the product of n divisors
H	Harmonic Mean	1.9999890099021	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 181981 can be divided by 2 positive divisors. The sum of these divisors (counting 181981) is 181982, the average is 90991.

Base conversion 181981

Base	System	Value
2	Binary	101100011011011101
3	Ternary	100020122001
4	Quaternary	230123131
5	Quinary	21310411
6	Senary	3522301
8	Octal	543335
10	Decimal	181981
12	Duodecimal	89391
16	Hexadecimal	2c6dd
20	Vigesimal	12ej1
36	Base36	3wf1

Cryptographic Hash Functions

md5	73c39d8447cb2e661c3e7aee1bfaed51
sha1	5e1bc1d4888a98f459a257e3428531b6a38158da
sha256	305be2aa6f5c8a15a8f1e0c4196a6f7b8b058b6745e467c523b5de4977a6a225
sha512	131514d57f9b5984f6c934913f7b41c87b50a57fcf59dc776c4a664815bd8919096ead50dadcdc1d2ae9b5e7180ea853076e65b7dd53a04d612b2a432b1cd550
ripemd-160	f6d7dd60c202bffa6fdb32662387f31c6b89ad84

181981 as geometric shapes

Circle

Radius = n

Diameter	363962
Circumference	1143420.3453858
Area	104040388936.83

Sphere

Radius = n

Volume	2.5244498692151E+16
Surface area	416161555747.32
Circumference	1143420.3453858

Square

Length = n

Perimeter	727924
Area	33117084361
Diagonal	257359.99829422

Cube

Length = n

Surface area	198702506166
Volume	6026680129099141
Space diagonal	315200.33801219

Equilateral Triangle

Length = n

Perimeter	545943
Area	14340118177.949
Altitude	157600.1690061

Triangular Pyramid

Length = n

Surface area	14340118177.949
Volume	7.102510645547E+14
Height	85786.666098073