638963945 is an odd 9-digits composite number following 638963944
and preceding 638963946 . In scientific notation, it is written as 6.38963945 × 10^8.
The sum of its digits is 53. It has a total of 3 prime factors and 8 positive divisors.
There are 510837040 positive integers (up to 638963945) that are relatively prime to 638963945.
638963945 has 8 divisors, whose sum is 767257920
The reverse of 638963945 is 549369836
Previous prime number is 1559
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 53
Digital Root 8
Name
six hundred thirty-eight million nine hundred sixty-three thousand nine hundred forty-five
Scientific notation
6.38963945 × 10^8
Engineering notation
6.38963945 × 10^6
Prime Factorization
5 × 1559 × 81971
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
638963945
Product of the distinct prime numbers
The prime factorization of 638963945 is 5 × 1559 × 81971.
Since it has a total of 3 prime factors.
9 , 10 , 86 , 80 , 532 , 805 , 2753 , 7611 , 91965 , 26039 , 986095 , 531454 , 5531359 , 609486 , 85789103 , 25857135 , 297109223 , 595713859 , 2112109271 , 5925933816
n×2
1277927890
n×3
1916891835
n×4
2555855780
n×5
3194819725
n÷2
319481972.5
n÷3
212987981.66667
n÷3
159740986.25
n÷5
127792789
n2
408274923009963025
n3
2.6087295545102E+26
n4
1.6668841275879E+35
n5
1.0650788580215E+44
2 √n
25277.736152591
3 √n
861.30860134775
4 √n
158.98973599761
5 √n
57.689300170383
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
-638963944
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 638963945 can be divided by 8 positive divisors.
The sum of these divisors (counting 638963945) is 1, the average is 0.125.
Base
System
Value
2
Binary
100110000101011101000011101001
3
Ternary
1122112022201202022
4
Quaternary
212011131003221
5
Quinary
2302033321240
6
Senary
143223114225
8
Octal
4605350351
10
Decimal
638963945
12
Duodecimal
159ba2975
16
Hexadecimal
2615d0e9
20
Vigesimal
9jda9h5
36
Base36
akf7qh
md5
d7d812ad9f3c7e70458febbc4bbe649a
sha1
17345840353dd4aacca5c73a3f244d2560ce7e32
sha256
c819d000b540526c28d7b8153da5ad865063a01c38920ee9428f43d0fa99af22
sha512
aa0c746c14ed2d961a04f63038e85400eabbbcacc0e8c2c96d158e54c8b629da51cdac36f11d8846a1bf0d18a9ccb4f32cceaabc5dfb66b3ff55cd82a4953760
ripemd-160
42802da33477c3158978569e3cca8ec3a35feb50
Diameter
1277927890
Circumference
4014728871.0415
Area
1.282633498773E+18
Volume
1.0927420804869E+27
Surface area
5.1305339950922E+18
Circumference
4014728871.0415
Perimeter
2555855780
Area
408274923009963025
Diagonal
903631476.88642
Surface area
2449649538059778150
Volume
2.6087295545102E+26
Space diagonal
1106718016.9446
Perimeter
1916891835
Area
1.7678822752738E+17
Altitude
553359008.47232
Surface area
1.7678822752738E+17
Volume
3.0744172637932E+25
Height
301210492.29547