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

1981809 (number)

1981809 is an odd 7-digits composite number following 1981808 and preceding 1981810. In scientific notation, it is written as 1.981809 × 10^6. The sum of its digits is 36. It has a total of 3 prime factors and 8 positive divisors. There are 1243392 positive integers (up to 1981809) that are relatively prime to 1981809.

Interesting facts

1981809 has 8 divisors, whose sum is 2331720
The reverse of 1981809 is 9081891
Previous prime number is 17

Basic properties

Is Prime? no
Number parity odd
Number length 7
Sum of Digits 36
Digital Root 9

Name

Name	one million nine hundred eighty-one thousand eight hundred nine

Notation

Scientific notation	1.981809 × 10^6
Engineering notation	1.981809 × 10^6

Prime Factorization of 1981809

Prime Factorization 9 × 17 × 12953

Composite number

ω	Distinct Factors	3	Total number of distinct prime factors
Ω	Total Factors	3	Total number of prime factors
rad	Radical	1981809	Product of the distinct prime numbers

The prime factorization of 1981809 is 9 × 17 × 12953. Since it has a total of 3 prime factors.

Most popular turbo-numbers

3, 1, 98, 38, 91, 536, 6822, 1797, 98941, 46227, 122100, 641194, 4685050, 9491408, 33043828, 87040077, 966335807, 107581994, 652730094, 9204708423

Basic calculations (n = 1981809)

Multiplication

n×y

n×2	3963618
n×3	5945427
n×4	7927236
n×5	9909045

Division

n÷y

n÷2	990904.5
n÷3	660603
n÷3	495452.25
n÷5	396361.8

Exponentiation

n^y

n²	3927566912481
n³	7783687455257058129
n⁴	1.5425781852016E+25
n⁵	3.0570953306361E+31

Nth Root

^y√n

²√n	1407.7673813525
³√n	125.60895391696
⁴√n	37.520226296659
⁵√n	18.172402995597

Divisors of 1981809

1, 9, 17, 153, 12953, 116577, 220201, 1981809

8 divisors

τ	Total Divisors	8	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-1981808	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.125	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	8	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 1981809 can be divided by 8 positive divisors. The sum of these divisors (counting 1981809) is 1, the average is 0.125.

Base conversion 1981809

Base	System	Value
2	Binary	111100011110101110001
3	Ternary	10201200112100
4	Quaternary	13203311301
5	Quinary	1001404214
6	Senary	110251013
8	Octal	7436561
10	Decimal	1981809
12	Duodecimal	7b6a69
16	Hexadecimal	1e3d71
20	Vigesimal	c7ea9
36	Base36	16h69

Cryptographic Hash Functions

md5	a387c57cfa4bcb05572b024303549558
sha1	457b5b0e0462363d51d27242d24be49f903aa722
sha256	cf4e742841d3d621d04499520b95e9a4985c7b304a198431fc8a79b7b4bdcbf1
sha512	b19c81166314f234f674e65dfa61795072dc58568e8800ea2808efaff71284f08a20808b267f908176499c64297a09d6e3271f5cfea89a43462bb43df2895b1b
ripemd-160	a3ff28a0934514e407b76aa1762f46147bf45e28

1981809 as geometric shapes

Circle

Radius = n

Diameter	3963618
Circumference	12452073.190436
Area	12338815358733

Sphere

Radius = n

Volume	3.2604233769699E+19
Surface area	49355261434931
Circumference	12452073.190436

Square

Length = n

Perimeter	7927236
Area	3927566912481
Diagonal	2802701.1658331

Cube

Length = n

Surface area	23565401474886
Volume	7783687455257058129
Space diagonal	3432593.8788973

Equilateral Triangle

Length = n

Perimeter	5945427
Area	1700686360635.9
Altitude	1716296.9394486

Triangular Pyramid

Length = n

Surface area	1700686360635.9
Volume	9.1731636370815E+17
Height	934233.72194435