1640540981 is an odd 10-digits composite number following 1640540980
and preceding 1640540982 . In scientific notation, it is written as 1.640540981 × 10^9.
The sum of its digits is 38. It has a total of 3 prime factors and 8 positive divisors.
There are 1613249680 positive integers (up to 1640540981) that are relatively prime to 1640540981.
1640540981 has 8 divisors, whose sum is 1667952000
The reverse of 1640540981 is 1890450461
Previous prime number is 389
Is Prime? no Number parity odd Number length 10 Sum of Digits 38 Digital Root 2
Name
one billion six hundred forty million five hundred forty thousand nine hundred eighty-one
Scientific notation
1.640540981 × 10^9
Engineering notation
1.640540981 × 10^9
Prime Factorization
71 × 389 × 59399
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
1640540981 Product of the distinct prime numbers
The prime factorization of 1640540981 is 71 × 389 × 59399.
Since it has a total of 3 prime factors.
1 , 8 , 2 , 17 , 548 , 145 , 2767 , 1700 , 51376 , 78751 , 458745 , 411349 , 1613536 , 5277734 , 31713397 , 57977765 , 467892485 , 431587505 , 9857922358 , 3391009615
n×2
3281081962
n×3
4921622943
n×4
6562163924
n×5
8202704905
n÷2
820270490.5
n÷3
546846993.66667
n÷3
410135245.25
n÷5
328108196.2
n2
2691374710340442361
n3
4.4153105075405E+27
n4
7.2434978314601E+36
n5
1.1883255038295E+46
2 √n40503.592198717
3 √n1179.4033613548
4 √n201.25504266656
5 √n69.662237043698
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
-1640540980 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 1640540981 can be divided by 8 positive divisors.
The sum of these divisors (counting 1640540981) is 1, the average is 0.125.
Base
System
Value
2
Binary
1100001110010001010101100110101
3
Ternary
11020022222010011002
4
Quaternary
1201302022230311
5
Quinary
11324434302411
6
Senary
430442253045
8
Octal
14162125465
10
Decimal
1640540981
12
Duodecimal
3994b7185
16
Hexadecimal
61c8ab35
20
Vigesimal
15cd7c91
36
Base36
r4qhit
md5
e660f1bbf58e2c0f50b1abc526851851
sha1
a45f3e197f5df64e0c6a69ff5334c864109fa5d0
sha256
75ff137f1416634485bcea1789602f23af23c92ec27710971c7da563805c2f9f
sha512
92f1c5d444f80f45d87ca300be14746cb0c2fbcf78c89034608c1f638d64b09dd82a5c6143399eedeec7ed2a20e90740d06d643c9c5a7c6056eec577bfebe838
ripemd-160
f7822e6808c26d386627078fa524bfc399758894
Diameter
3281081962
Circumference
10307822987.645
Area
8.4552030180629E+18
Volume
1.8494809405076E+28
Surface area
3.3820812072252E+19
Circumference
10307822987.645
Perimeter
6562163924
Area
2691374710340442361
Diagonal
2320075304.9591
Surface area
1.6148248262043E+19
Volume
4.4153105075405E+27
Space diagonal
2841500330.9909
Perimeter
4921622943
Area
1.1653994351289E+18
Altitude
1420750165.4954
Surface area
1.1653994351289E+18
Volume
5.2034933348768E+26
Height
773358434.98635