138791491 is an odd 9-digits composite number following 138791490
and preceding 138791492 . In scientific notation, it is written as 1.38791491 × 10^8.
The sum of its digits is 43. It has a total of 2 prime factors and 4 positive divisors.
There are 138461400 positive integers (up to 138791491) that are relatively prime to 138791491.
138791491 has 4 divisors, whose sum is 139121584
The reverse of 138791491 is 194197831
Previous prime number is 421
Is Prime? no Number parity odd Number length 9 Sum of Digits 43 Digital Root 7
Name
one hundred thirty-eight million seven hundred ninety-one thousand four hundred ninety-one
Scientific notation
1.38791491 × 10^8
Engineering notation
1.38791491 × 10^6
Prime Factorization
421 × 329671
Composite number
ω Distinct Factors
2 Total number of distinct prime factors
Ω Total Factors
2 Total number of prime factors
rad Radical
138791491 Product of the distinct prime numbers
The prime factorization of 138791491 is 421 × 329671.
Since it has a total of 2 prime factors.
9 , 8 , 80 , 44 , 676 , 622 , 2960 , 1545 , 95776 , 18923 , 267060 , 488532 , 6069246 , 3412144 , 74821211 , 74699741 , 240993955 , 713267032 , 7874829953 , 9975154372
n×2
277582982
n×3
416374473
n×4
555165964
n×5
693957455
n÷2
69395745.5
n÷3
46263830.333333
n÷3
34697872.75
n÷5
27758298.2
n2
19263077974003081
n3
2.6735513132611E+24
n4
3.7106617303252E+32
n5
5.1500827414848E+40
2 √n11780.98005261
3 √n517.75100086283
4 √n108.5402232014
5 √n42.508185612191
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
-138791490 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 138791491 can be divided by 4 positive divisors.
The sum of these divisors (counting 138791491) is 1, the average is 0.25.
Base
System
Value
2
Binary
1000010001011100101001000011
3
Ternary
100200011100010121
4
Quaternary
20101130221003
5
Quinary
241012311431
6
Senary
21434441111
8
Octal
1021345103
10
Decimal
138791491
12
Duodecimal
3a593197
16
Hexadecimal
845ca43
20
Vigesimal
2378ieb
36
Base36
2ams77
md5
e3a51b975ac71f3cc8fe30b1ab7b1174
sha1
dc218789f233bc0103a0c3dbb222b4ed050c6f1e
sha256
fbf67040ca1ec6c3e1e77d8c746d80c1641fa052c9d471fe7c20fb791f4ae3d8
sha512
c99d69c6dbd7fbb7aa91fd611d3e75baee2ca114593fe4cd7f14943d59bf03c30e5804fe439122fc4cb2f293ff8808a4f09581d721d7265ff63fee20b72262cc
ripemd-160
6dc488f57d211a67f9559d1c69887b487a483ba5
Diameter
277582982
Circumference
872052657.01275
Area
6.0516744248655E+16
Volume
1.1198945552982E+25
Surface area
2.4206697699462E+17
Circumference
872052657.01275
Perimeter
555165964
Area
19263077974003081
Diagonal
196280808.91418
Surface area
115578467844018486
Volume
2.6735513132611E+24
Space diagonal
240393914.07024
Perimeter
416374473
Area
8.3411574402836E+15
Altitude
120196957.03512
Surface area
8.3411574402836E+15
Volume
3.1508104390953E+23
Height
65426936.304728