1640371981 is an odd 10-digits prime number following 1640371980
and preceding 1640371982 . In scientific notation, it is written as 1.640371981 × 10^9.
The sum of its digits is 40. It has a total of 1 prime factors and 2 positive divisors.
There are 1640371980 positive integers (up to 1640371981) that are relatively prime to 1640371981.
1640371981 has 2 divisors, whose sum is 1640371982
The reverse of 1640371981 is 1891730461
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 10
Sum of Digits 40
Digital Root 4
Name
one billion six hundred forty million three hundred seventy-one thousand nine hundred eighty-one
Scientific notation
1.640371981 × 10^9
Engineering notation
1.640371981 × 10^9
Prime Factorization
1640371981
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
1640371981
Product of the distinct prime numbers
The prime factorization of 1640371981 is 1640371981.
Since it has a total of 1 prime factors.
10 , 9 , 89 , 95 , 687 , 505 , 5757 , 5533 , 79432 , 87380 , 558909 , 376889 , 6469317 , 2534040 , 41281589 , 74800517 , 717320773 , 647679432 , 4438592242 , 6589946580
n×2
3280743962
n×3
4921115943
n×4
6561487924
n×5
8201859905
n÷2
820185990.5
n÷3
546790660.33333
n÷3
410092995.25
n÷5
328074396.2
n2
2690820236049864361
n3
4.413946121124E+27
n4
7.2405135427354E+36
n5
1.1877135543554E+46
2 √n
40501.505910274
3 √n
1179.3628612972
4 √n
201.24985940436
5 √n
69.660801736279
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
1640371982
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
820185991
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
40501.50592262
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999987808
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1640371981 can be divided by 2 positive divisors.
The sum of these divisors (counting 1640371981) is 1640371982, the average is 820185991.
Base
System
Value
2
Binary
1100001110001100001011100001101
3
Ternary
11020022122112022211
4
Quaternary
1201301201130031
5
Quinary
11324413400411
6
Senary
430434510421
8
Octal
14161413415
10
Decimal
1640371981
12
Duodecimal
399435411
16
Hexadecimal
61c6170d
20
Vigesimal
15cc69j1
36
Base36
r4mv4d
md5
0aa3a870aa84fab9ffb61bc69c4a9435
sha1
83782a57da04ffa7eb97328897cd30cdcc507a90
sha256
c2819956dbd1690995c1ea91c0db77e9b28eec4576df988c510a437880c2837a
sha512
b3c3896b69a0c379b52545db4e0762e10ff7818e34a23945cf228e16af5e5b4679515fbc5181436e9191fa469730a7c44262f42cb03da628eea37c8db4b28e11
ripemd-160
edf5c03c31276a841077baa8dbb1af3cf18bbe88
Diameter
3280743962
Circumference
10306761129.328
Area
8.453461085705E+18
Volume
1.8489094276619E+28
Surface area
3.381384434282E+19
Circumference
10306761129.328
Perimeter
6561487924
Area
2690820236049864361
Diagonal
2319836302.867
Surface area
1.6144921416299E+19
Volume
4.413946121124E+27
Space diagonal
2841207614.4044
Perimeter
4921115943
Area
1.1651593407182E+18
Altitude
1420603807.2022
Surface area
1.1651593407182E+18
Volume
5.2018853900647E+26
Height
773278767.62234