638994913 is an odd 9-digits composite number following 638994912
and preceding 638994914 . In scientific notation, it is written as 6.38994913 × 10^8.
The sum of its digits is 52. It has a total of 2 prime factors and 4 positive divisors.
There are 635751088 positive integers (up to 638994913) that are relatively prime to 638994913.
638994913 has 4 divisors, whose sum is 642238740
The reverse of 638994913 is 319499836
Previous prime number is 197
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 52
Digital Root 7
Name
six hundred thirty-eight million nine hundred ninety-four thousand nine hundred thirteen
Scientific notation
6.38994913 × 10^8
Engineering notation
6.38994913 × 10^6
Prime Factorization
197 × 3243629
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
638994913
Product of the distinct prime numbers
The prime factorization of 638994913 is 197 × 3243629.
Since it has a total of 2 prime factors.
5 , 10 , 24 , 69 , 207 , 307 , 206 , 9087 , 56258 , 19775 , 994773 , 702395 , 3019613 , 3931946 , 19618702 , 20557447 , 526393941 , 473754431 , 3877955124 , 4291322338
n×2
1277989826
n×3
1916984739
n×4
2555979652
n×5
3194974565
n÷2
319497456.5
n÷3
212998304.33333
n÷3
159748728.25
n÷5
127798982.6
n2
408314498839877569
n3
2.6091088766283E+26
n4
1.6672072996286E+35
n5
1.0653369833791E+44
2 √n
25278.348700024
3 √n
861.32251583858
4 √n
158.99166236009
5 √n
57.689859352987
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
-638994912
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 638994913 can be divided by 4 positive divisors.
The sum of these divisors (counting 638994913) is 1, the average is 0.25.
Base
System
Value
2
Binary
100110000101100100100111100001
3
Ternary
1122112101022020021
4
Quaternary
212011210213201
5
Quinary
2302040314123
6
Senary
143223513441
8
Octal
4605444741
10
Decimal
638994913
12
Duodecimal
159bb8881
16
Hexadecimal
261649e1
20
Vigesimal
9jde75d
36
Base36
akfvmp
md5
f400629b188e2abe074f79c5e3a5c021
sha1
a5dc4686c580c77111deb89160fbc820c8d3cda1
sha256
543f485b4adba44fc1017ca11d3d35d47b1914d21744a459b2d55aae5bc1b52b
sha512
65a55e439d28c3920173968c693bb6b6e6584f103c62a39b30f04287bbb69133d6ba33b1703ad09cda5d59b7cd7cb862bc8244a464fafffc9638bbff74e222d0
ripemd-160
0be66e5ef4bae2a657c8b0763a003423ef27fd13
Diameter
1277989826
Circumference
4014923448.7241
Area
1.2827578299096E+18
Volume
1.0929009705642E+27
Surface area
5.1310313196382E+18
Circumference
4014923448.7241
Perimeter
2555979652
Area
408314498839877569
Diagonal
903675272.25202
Surface area
2449886993039265414
Volume
2.6091088766283E+26
Space diagonal
1106771655.0941
Perimeter
1916984739
Area
1.7680536436442E+17
Altitude
553385827.54703
Surface area
1.7680536436442E+17
Volume
3.0748642991964E+25
Height
301225090.75067