1640388721 is an odd 10-digits composite number following 1640388720
and preceding 1640388722 . In scientific notation, it is written as 1.640388721 × 10^9.
The sum of its digits is 40. It has a total of 3 prime factors and 8 positive divisors.
There are 1600312000 positive integers (up to 1640388721) that are relatively prime to 1640388721.
1640388721 has 8 divisors, whose sum is 1681468488
The reverse of 1640388721 is 1278830461
Previous prime number is 41
Is Prime? no Number parity odd Number length 10 Sum of Digits 40 Digital Root 4
Name
one billion six hundred forty million three hundred eighty-eight thousand seven hundred twenty-one
Scientific notation
1.640388721 × 10^9
Engineering notation
1.640388721 × 10^9
Prime Factorization
1681 × 41 × 23801
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
1640388721 Product of the distinct prime numbers
The prime factorization of 1640388721 is 1681 × 41 × 23801.
Since it has a total of 3 prime factors.
2 , 4 , 70 , 52 , 74 , 101 , 4590 , 11 , 57842 , 79212 , 238972 , 255261 , 2038485 , 1051806 , 21986816 , 97232270 , 698253240 , 887857534 , 8358697514 , 9723590163
n×2
3280777442
n×3
4921166163
n×4
6561554884
n×5
8201943605
n÷2
820194360.5
n÷3
546796240.33333
n÷3
410097180.25
n÷5
328077744.2
n2
2690875155984015841
n3
4.4140812554953E+27
n4
7.240809105092E+36
n5
1.1877741586907E+46
2 √n40501.71256873
3 √n1179.3668730839
4 √n201.25037284122
5 √n69.660943913428
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
-1640388720 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 1640388721 can be divided by 8 positive divisors.
The sum of these divisors (counting 1640388721) is 1, the average is 0.125.
Base
System
Value
2
Binary
1100001110001100101100001110001
3
Ternary
11020022200101021211
4
Quaternary
1201301211201301
5
Quinary
11324414414341
6
Senary
430435120121
8
Octal
14161454161
10
Decimal
1640388721
12
Duodecimal
399443041
16
Hexadecimal
61c65871
20
Vigesimal
15cc8bg1
36
Base36
r4n81d
md5
84a8ee9479774e7e63adfba614375a21
sha1
30f10f42691283c40ee3b07e7a53b1ba737c9275
sha256
1ac50f75cfad6bc2db05fa5912b06279c02f6838e6b82de4eb912795e2c3f6e9
sha512
5b63c09405ac651d8aff01ba7921a1bf0a643a7a15862c0cf9536707ff456acfa4d57439bbabc4678bd41ec49e53ca01129f335bf3a4b7613633835f2713829a
ripemd-160
6ab6b0987100602902ec05ec383f75e31c7cd637
Diameter
3280777442
Circumference
10306866309.85
Area
8.4536336217667E+18
Volume
1.848966032615E+28
Surface area
3.3814534487067E+19
Circumference
10306866309.85
Perimeter
6561554884
Area
2690875155984015841
Diagonal
2319859976.8021
Surface area
1.6145250935904E+19
Volume
4.4140812554953E+27
Space diagonal
2841236608.9349
Perimeter
4921166163
Area
1.1651831217473E+18
Altitude
1420618304.4675
Surface area
1.1651831217473E+18
Volume
5.2020446474486E+26
Height
773286658.93402