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

1991385 (number)

1991385 is an odd 7-digits composite number following 1991384 and preceding 1991386. In scientific notation, it is written as 1.991385 × 10^6. The sum of its digits is 36. It has a total of 4 prime factors and 16 positive divisors. There are 959040 positive integers (up to 1991385) that are relatively prime to 1991385.

Interesting facts

1991385 has 16 divisors, whose sum is 2923200
The reverse of 1991385 is 5831991
Previous prime number is 11

Basic properties

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

Name

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

Notation

Scientific notation	1.991385 × 10^6
Engineering notation	1.991385 × 10^6

Prime Factorization of 1991385

Prime Factorization 405 × 3 × 11 × 149

Composite number

ω	Distinct Factors	4	Total number of distinct prime factors
Ω	Total Factors	4	Total number of prime factors
rad	Radical	1991385	Product of the distinct prime numbers

The prime factorization of 1991385 is 405 × 3 × 11 × 149. Since it has a total of 4 prime factors.

Most popular turbo-numbers

5, 4, 89, 66, 332, 645, 129, 4407, 62782, 91247, 531204, 546366, 8810151, 4161652, 73671259, 93865667, 637493334, 79641123, 8528029713, 6695052965

Basic calculations (n = 1991385)

Multiplication

n×y

n×2	3982770
n×3	5974155
n×4	7965540
n×5	9956925

Division

n÷y

n÷2	995692.5
n÷3	663795
n÷3	497846.25
n÷5	398277

Exponentiation

n^y

n²	3965614218225
n³	7897064669959991625
n⁴	1.5726096127788E+25
n⁵	3.1316711937436E+31

Nth Root

^y√n

²√n	1411.1644128166
³√n	125.81094095451
⁴√n	37.565468356146
⁵√n	18.189930775789

Divisors of 1991385

1, 3, 11, 33, 149, 405, 447, 1215, 1639, 4455, 4917, 13365, 60345, 181035, 663795, 1991385

16 divisors

τ	Total Divisors	16	Total number of the positive divisors of n
σ	Sum of Divisors	1	Sum of all the positive divisors of n
s	Aliquot Sum	-1991384	Sum of the proper positive divisors of n
A	Arithmetic Mean	0.0625	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	16	Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 1991385 can be divided by 16 positive divisors. The sum of these divisors (counting 1991385) is 1, the average is 0.0625.

Base conversion 1991385

Base	System	Value
2	Binary	111100110001011011001
3	Ternary	10202011200000
4	Quaternary	13212023121
5	Quinary	1002211020
6	Senary	110403213
8	Octal	7461331
10	Decimal	1991385
12	Duodecimal	800509
16	Hexadecimal	1e62d9
20	Vigesimal	c8i95
36	Base36	16ok9

Cryptographic Hash Functions

md5	c7340a7c249c1302b8cd5de3df57e2c2
sha1	d348b422e3bc971360c83a423e9065bc08e6a268
sha256	1423a844d3dbf597e8021338a4feab0768a8293f7d664d122896035c900345fb
sha512	c2408269e4873a26ec67731162d54a874777fa5bc6cf921cbe0f82de10c3377876cf73302cc3d88aa9c0318b2fe6ed48d9dc6d853f2bd8e6cf5125bfa8845bac
ripemd-160	c084415f186faa356c461985a85720a09ab2e08c

1991385 as geometric shapes

Circle

Radius = n

Diameter	3982770
Circumference	12512240.972938
Area	12458344494947

Sphere

Radius = n

Volume	3.3079147136093E+19
Surface area	49833377979788
Circumference	12512240.972938

Square

Length = n

Perimeter	7965540
Area	3965614218225
Diagonal	2816243.6749063

Cube

Length = n

Surface area	23793685309350
Volume	7897064669959991625
Space diagonal	3449179.9974305

Equilateral Triangle

Length = n

Perimeter	5974155
Area	1717161327295.8
Altitude	1724589.9987153

Triangular Pyramid

Length = n

Surface area	1717161327295.8
Volume	9.3067799659957E+17
Height	938747.89163545