1991231081 (number)

1991231081 is an odd 10-digits composite number following 1991231080 and preceding 1991231082. In scientific notation, it is written as 1.991231081 × 10^9. The sum of its digits is 35. It has a total of 2 prime factors and 4 positive divisors. There are 1706769456 positive integers (up to 1991231081) that are relatively prime to 1991231081.

Interesting facts

Basic properties

Name

Name one billion nine hundred ninety-one million two hundred thirty-one thousand eighty-one

Notation

Scientific notation 1.991231081 × 10^9
Engineering notation 1.991231081 × 10^9

Prime Factorization of 1991231081

Prime Factorization 49 × 40637369

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 1991231081
Product of the distinct prime numbers

The prime factorization of 1991231081 is 49 × 40637369. Since it has a total of 2 prime factors.

Most popular turbo-numbers

9, 7, 89, 55, 889, 934, 1570, 3762, 16063, 82441, 297469, 551052, 5432011, 3175362, 68291336, 91155327, 555616135, 996479325, 748839613, 2179034813

Basic calculations (n = 1991231081)

Multiplication

n×y
n×2 3982462162
n×3 5973693243
n×4 7964924324
n×5 9956155405

Division

n÷y
n÷2 995615540.5
n÷3 663743693.66667
n÷3 497807770.25
n÷5 398246216.2

Exponentiation

ny
n2 3965001217940428561
n3 7.8952336613658E+27
n4 1.5721234658269E+37
n5 3.130461108324E+46

Nth Root

y√n
2√n 44623.212356351
3√n 1258.0769945958
4√n 211.2420705171
5√n 72.41429926968

Divisors of 1991231081

1, 49, 40637369, 1991231081

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 -1991231080
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 1991231081 can be divided by 4 positive divisors. The sum of these divisors (counting 1991231081) is 1, the average is 0.25.

Base conversion 1991231081

Base System Value
2 Binary 1110110101011111100011001101001
3 Ternary 12010202212000112022
4 Quaternary 1312223330121221
5 Quinary 13034223343311
6 Senary 525330554225
8 Octal 16653743151
10 Decimal 1991231081
12 Duodecimal 476a38975
16 Hexadecimal 76afc669
20 Vigesimal 1b253he1
36 Base36 wxizqh

Cryptographic Hash Functions

md5 7e7956d7480a2ceda49a43f553b7ec1a
sha1 f873db36a699ee62e43b96e60044b560c1b25adc
sha256 b27418bfa359f973b9336bbe8e5bc2a8e9455a76214c86b2b14dd567cdd6dd33
sha512 2a0db36401040844397323956789d65c46ad8a30e36d4a1d408c8a47d232699e98f50944ac4ffa98491e876791e8a67102926e0db9cfaf0f56bc0254c4e45b77
ripemd-160 62d905ba09a803e039f0e1266dcedabbe8a39101

1991231081 as geometric shapes

Circle

Radius = n
Diameter 3982462162
Circumference 12511273871.339
Area 1.2456418697756E+19

Sphere

Radius = n
Volume 3.3071477425229E+28
Surface area 4.9825674791025E+19
Circumference 12511273871.339

Square

Length = n
Perimeter 7964924324
Area 3965001217940428561
Diagonal 2816026000.569

Cube

Length = n
Surface area 2.3790007307643E+19
Volume 7.8952336613658E+27
Space diagonal 3448913401.9023

Equilateral Triangle

Length = n
Perimeter 5973693243
Area 1.7168958903863E+18
Altitude 1724456700.9511

Triangular Pyramid

Length = n
Surface area 1.7168958903863E+18
Volume 9.3046221016735E+26
Height 938675333.52301