1991125087 (number)

1991125087 is an odd 10-digits composite number following 1991125086 and preceding 1991125088. In scientific notation, it is written as 1.991125087 × 10^9. The sum of its digits is 43. It has a total of 2 prime factors and 4 positive divisors. There are 1706678640 positive integers (up to 1991125087) that are relatively prime to 1991125087.

Interesting facts

Basic properties

Name

Name one billion nine hundred ninety-one million one hundred twenty-five thousand eighty-seven

Notation

Scientific notation 1.991125087 × 10^9
Engineering notation 1.991125087 × 10^9

Prime Factorization of 1991125087

Prime Factorization 7 × 284446441

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 1991125087
Product of the distinct prime numbers

The prime factorization of 1991125087 is 7 × 284446441. Since it has a total of 2 prime factors.

Most popular turbo-numbers

3, 1, 1, 69, 485, 425, 6108, 735, 60925, 1089, 201360, 253433, 8265852, 2644488, 72128001, 4393363, 923500997, 771131548, 9774073283, 8311327043

Basic calculations (n = 1991125087)

Multiplication

n×y
n×2 3982250174
n×3 5973375261
n×4 7964500348
n×5 9955625435

Division

n÷y
n÷2 995562543.5
n÷3 663708362.33333
n÷3 497781271.75
n÷5 398225017.4

Exponentiation

ny
n2 3964579112080757569
n3 7.8939729294602E+27
n4 1.5717887535947E+37
n5 3.1296280187469E+46

Nth Root

y√n
2√n 44622.024685126
3√n 1258.0546715582
4√n 211.23925933672
5√n 72.413528325038

Divisors of 1991125087

1, 7, 284446441, 1991125087

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 -1991125086
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 1991125087 can be divided by 4 positive divisors. The sum of these divisors (counting 1991125087) is 1, the average is 0.25.

Base conversion 1991125087

Base System Value
2 Binary 1110110101011100010100001011111
3 Ternary 12010202122122010121
4 Quaternary 1312223202201133
5 Quinary 13034212000322
6 Senary 525324415411
8 Octal 16653424137
10 Decimal 1991125087
12 Duodecimal 4769a7567
16 Hexadecimal 76ae285f
20 Vigesimal 1b24ace7
36 Base36 wxgpy7

Cryptographic Hash Functions

md5 88dd300b339c13fc3aa6f123387581bd
sha1 ef6503466cb42c772a61f7ad6149fbbec9401d3f
sha256 16a37d4d1cc39e291062c4c58f5b70ab10dd137d8a175f84457a2565333219b3
sha512 0cecbf8963f46b471bbbf5daf503117bef4f631ef0fbe9e6cd358b45da0b726708086668ed6867f81d97e3c0fc59c0d62f3636f835419494a919a899a1181190
ripemd-160 b74c8649992a01556d03d3eccd27c81e46b5b8d8

1991125087 as geometric shapes

Circle

Radius = n
Diameter 3982250174
Circumference 12510607891.395
Area 1.2455092613088E+19

Sphere

Radius = n
Volume 3.3066196483772E+28
Surface area 4.9820370452354E+19
Circumference 12510607891.395

Square

Length = n
Perimeter 7964500348
Area 3964579112080757569
Diagonal 2815876102.4167

Cube

Length = n
Surface area 2.3787474672485E+19
Volume 7.8939729294602E+27
Space diagonal 3448729814.909

Equilateral Triangle

Length = n
Perimeter 5973375261
Area 1.7167131131875E+18
Altitude 1724364907.4545

Triangular Pyramid

Length = n
Surface area 1.7167131131875E+18
Volume 9.3031363148739E+26
Height 938625367.47224