1991231087 (number)

1991231087 is an odd 10-digits composite number following 1991231086 and preceding 1991231088. In scientific notation, it is written as 1.991231087 × 10^9. The sum of its digits is 41. It has a total of 2 prime factors and 4 positive divisors. There are 1968857616 positive integers (up to 1991231087) that are relatively prime to 1991231087.

Interesting facts

Basic properties

Name

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

Notation

Scientific notation 1.991231087 × 10^9
Engineering notation 1.991231087 × 10^9

Prime Factorization of 1991231087

Prime Factorization 89 × 22373383

Composite number
ω Distinct Factors 2
Total number of distinct prime factors
Ω Total Factors 2
Total number of prime factors
rad Radical 1991231087
Product of the distinct prime numbers

The prime factorization of 1991231087 is 89 × 22373383. Since it has a total of 2 prime factors.

Most popular turbo-numbers

2, 9, 44, 10, 747, 765, 8342, 8453, 60340, 96266, 705425, 686801, 3472659, 2688551, 28852611, 28187976, 982705750, 825786567, 1129239272, 2406983334

Basic calculations (n = 1991231087)

Multiplication

n×y
n×2 3982462174
n×3 5973693261
n×4 7964924348
n×5 9956155435

Division

n÷y
n÷2 995615543.5
n÷3 663743695.66667
n÷3 497807771.75
n÷5 398246217.4

Exponentiation

ny
n2 3965001241835201569
n3 7.8952337327359E+27
n4 1.5721234847755E+37
n5 3.1304611554877E+46

Nth Root

y√n
2√n 44623.212423581
3√n 1258.0769958594
4√n 211.24207067623
5√n 72.41429931332

Divisors of 1991231087

1, 89, 22373383, 1991231087

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 -1991231086
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 1991231087 can be divided by 4 positive divisors. The sum of these divisors (counting 1991231087) is 1, the average is 0.25.

Base conversion 1991231087

Base System Value
2 Binary 1110110101011111100011001101111
3 Ternary 12010202212000112112
4 Quaternary 1312223330121233
5 Quinary 13034223343322
6 Senary 525330554235
8 Octal 16653743157
10 Decimal 1991231087
12 Duodecimal 476a3897b
16 Hexadecimal 76afc66f
20 Vigesimal 1b253he7
36 Base36 wxizqn

Cryptographic Hash Functions

md5 c0f4ac73b22ccaf3afb1b91b5fc76c8a
sha1 b589b7f0e75934f6728dd89663d57e6da1f8dbf7
sha256 a4c8a19a01a87f8e0a2f86c1220c6c4b550ad5ce61d37bc37f1c96cd4f74fe96
sha512 3e17ba20b51c7b636704a1962571e0f61e566a95e8af10d13fcf7b2b2524d11765abc414b0d08e03a4dd911d98a496cbaa87669b92ef1ab0e92d5d56bb8d43be
ripemd-160 6875b231806890a90c3680cc360643fb5df6c549

1991231087 as geometric shapes

Circle

Radius = n
Diameter 3982462174
Circumference 12511273909.038
Area 1.2456418772824E+19

Sphere

Radius = n
Volume 3.3071477724183E+28
Surface area 4.9825675091296E+19
Circumference 12511273909.038

Square

Length = n
Perimeter 7964924348
Area 3965001241835201569
Diagonal 2816026009.0543

Cube

Length = n
Surface area 2.3790007451011E+19
Volume 7.8952337327359E+27
Space diagonal 3448913412.2946

Equilateral Triangle

Length = n
Perimeter 5973693261
Area 1.7168959007331E+18
Altitude 1724456706.1473

Triangular Pyramid

Length = n
Surface area 1.7168959007331E+18
Volume 9.3046221857838E+26
Height 938675336.35144