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

1981561 (number)

1981561 is an odd 7-digits composite number following 1981560 and preceding 1981562. In scientific notation, it is written as 1.981561 × 10^6. The sum of its digits is 31. It has a total of 2 prime factors and 4 positive divisors. There are 1978624 positive integers (up to 1981561) that are relatively prime to 1981561.

Interesting facts

1981561 has 4 divisors, whose sum is 1984500
The reverse of 1981561 is 1651891
Previous prime number is 1049

Basic properties

Is Prime? no
Number parity odd
Number length 7
Sum of Digits 31
Digital Root 4

Name

Name	one million nine hundred eighty-one thousand five hundred sixty-one

Notation

Scientific notation	1.981561 × 10^6
Engineering notation	1.981561 × 10^6

Prime Factorization of 1981561

Prime Factorization 1049 × 1889

Composite number

ω	Distinct Factors	2	Total number of distinct prime factors
Ω	Total Factors	2	Total number of prime factors
rad	Radical	1981561	Product of the distinct prime numbers

The prime factorization of 1981561 is 1049 × 1889. Since it has a total of 2 prime factors.

Most popular turbo-numbers

10, 7, 45, 56, 676, 228, 7758, 6503, 47605, 79783, 83643, 997697, 6531319, 4552569, 54502103, 9793985, 31904333, 957108993, 2697211910, 2874594801

Basic calculations (n = 1981561)

Multiplication

n×y

n×2	3963122
n×3	5944683
n×4	7926244
n×5	9907805

Division

n÷y

n÷2	990780.5
n÷3	660520.33333333
n÷3	495390.25
n÷5	396312.2

Exponentiation

n^y

n²	3926583996721
n³	7780765711126461481
n⁴	1.5418061883305E+25
n⁵	3.0551830123545E+31

Nth Root

^y√n

²√n	1407.6792958625
³√n	125.60371420582
⁴√n	37.519052438228
⁵√n	18.17194816049

Divisors of 1981561

1, 1049, 1889, 1981561

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	-1981560	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 1981561 can be divided by 4 positive divisors. The sum of these divisors (counting 1981561) is 1, the average is 0.25.

Base conversion 1981561

Base	System	Value
2	Binary	111100011110001111001
3	Ternary	10201200012011
4	Quaternary	13203301321
5	Quinary	1001402221
6	Senary	110245521
8	Octal	7436171
10	Decimal	1981561
12	Duodecimal	7b68a1
16	Hexadecimal	1e3c79
20	Vigesimal	c7di1
36	Base36	16gzd

Cryptographic Hash Functions

md5	959220b73df7e095eab57ac2decff98c
sha1	592616d8fc227b68f4bbcc6a156e238d02472aa2
sha256	3446a057de5ae80efcc24dd49b6536a722b179b37d9252da1941decd4f068a5f
sha512	5fc8714be6220b4da96502943eb3f45f8783cbac5abf525b5be3ceae32f1460629886dcf0d0ed00535a577be0edd81cf0872ec951cd1c63afe18e2cd3f1256f3
ripemd-160	d7382d9cf4b588b533dd25da4db58424e6061472

1981561 as geometric shapes

Circle

Radius = n

Diameter	3963122
Circumference	12450514.96048
Area	12335727437802

Sphere

Radius = n

Volume	3.2591995196504E+19
Surface area	49342909751208
Circumference	12450514.96048

Square

Length = n

Perimeter	7926244
Area	3926583996721
Diagonal	2802350.4408696

Cube

Length = n

Surface area	23559503980326
Volume	7780765711126461481
Space diagonal	3432164.330297

Equilateral Triangle

Length = n

Perimeter	5944683
Area	1700260745626.9
Altitude	1716082.1651485

Triangular Pyramid

Length = n

Surface area	1700260745626.9
Volume	9.1697203286022E+17
Height	934116.8136232