1991231089 is an odd 10-digits composite number following 1991231088
and preceding 1991231090 . In scientific notation, it is written as 1.991231089 × 10^9.
The sum of its digits is 43. It has a total of 3 prime factors and 8 positive divisors.
There are 1893871056 positive integers (up to 1991231089) that are relatively prime to 1991231089.
1991231089 has 8 divisors, whose sum is 2090640960
The reverse of 1991231089 is 9801321991
Previous prime number is 29
Is Prime? no
Number parity odd
Number length 10
Sum of Digits 43
Digital Root 7
Name
one billion nine hundred ninety-one million two hundred thirty-one thousand eighty-nine
Scientific notation
1.991231089 × 10^9
Engineering notation
1.991231089 × 10^9
Prime Factorization
67 × 29 × 1024823
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
1991231089
Product of the distinct prime numbers
The prime factorization of 1991231089 is 67 × 29 × 1024823.
Since it has a total of 3 prime factors.
8 , 1 , 89 , 90 , 738 , 332 , 1263 , 513 , 20853 , 78509 , 703653 , 250013 , 6443099 , 2213607 , 21858235 , 61042661 , 533568599 , 980753326 , 4189915997 , 4691370690
n×2
3982462178
n×3
5973693267
n×4
7964924356
n×5
9956155445
n÷2
995615544.5
n÷3
663743696.33333
n÷3
497807772.25
n÷5
398246217.8
n2
3965001249800125921
n3
7.8952337565259E+27
n4
1.5721234910917E+37
n5
3.1304611712089E+46
2 √n
44623.21244599
3 √n
1258.0769962806
4 √n
211.24207072927
5 √n
72.414299327867
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-1991231088
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1991231089 can be divided by 8 positive divisors.
The sum of these divisors (counting 1991231089) is 1, the average is 0.125.
Base
System
Value
2
Binary
1110110101011111100011001110001
3
Ternary
12010202212000112121
4
Quaternary
1312223330121301
5
Quinary
13034223343324
6
Senary
525330554241
8
Octal
16653743161
10
Decimal
1991231089
12
Duodecimal
476a38981
16
Hexadecimal
76afc671
20
Vigesimal
1b253he9
36
Base36
wxizqp
md5
5ae01bdd77d29dc51159be418c0889bb
sha1
06df38123dcfa5a8106c4861e75502556906e833
sha256
1394000689e1ce7226ce46ba55d116b41744f1d578666f0153aaf485fdf2ee35
sha512
5d31835ae4793f3fef1cf510bd6aa5a926e0e19e3d3fb055ec666824914c9bdafd7827cb9992b655de57b8d1c776951ea6e57dc64426e744f9b09d9df06dcca0
ripemd-160
6f723dd6dfdb77b91d986b34bb3c509fc879288a
Diameter
3982462178
Circumference
12511273921.604
Area
1.2456418797846E+19
Volume
3.3071477823834E+28
Surface area
4.9825675191386E+19
Circumference
12511273921.604
Perimeter
7964924356
Area
3965001249800125921
Diagonal
2816026011.8827
Surface area
2.3790007498801E+19
Volume
7.8952337565259E+27
Space diagonal
3448913415.7587
Perimeter
5973693267
Area
1.716895904182E+18
Altitude
1724456707.8794
Surface area
1.716895904182E+18
Volume
9.3046222138206E+26
Height
938675337.29425