2155691871 is an odd 10-digits composite number following 2155691870
and preceding 2155691872 . In scientific notation, it is written as 2.155691871 × 10^9.
The sum of its digits is 45. It has a total of 4 prime factors and 16 positive divisors.
There are 1400319360 positive integers (up to 2155691871) that are relatively prime to 2155691871.
2155691871 has 16 divisors, whose sum is 2930555488
The reverse of 2155691871 is 1781965512
Previous prime number is 61
Is Prime? no
Number parity odd
Number length 10
Sum of Digits 45
Digital Root 9
Name
two billion one hundred fifty-five million six hundred ninety-one thousand eight hundred seventy-one
Scientific notation
2.155691871 × 10^9
Engineering notation
2.155691871 × 10^9
Prime Factorization
3 × 321 × 61 × 36697
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
2155691871
Product of the distinct prime numbers
The prime factorization of 2155691871 is 3 × 321 × 61 × 36697.
Since it has a total of 4 prime factors.
1 , 9 , 33 , 99 , 744 , 493 , 160 , 5135 , 66232 , 31442 , 806441 , 378838 , 7683460 , 5378341 , 34789955 , 82304222 , 613680341 , 265994991 , 765721309 , 2665660766
n×2
4311383742
n×3
6467075613
n×4
8622767484
n×5
10778459355
n÷2
1077845935.5
n÷3
718563957
n÷3
538922967.75
n÷5
431138374.2
n2
4647007442695480641
n3
1.0017516168695E+28
n4
2.1594678172467E+37
n5
4.6551472193249E+46
2 √n
46429.428932521
3 √n
1291.8008362292
4 √n
215.47489165218
5 √n
73.572808854439
1 , 3 , 61 , 183 , 321 , 963 , 19581 , 36697 , 58743 , 110091 , 2238517 , 6715551 , 11779737 , 35339211 , 718563957 , 2155691871
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-2155691870
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 2155691871 can be divided by 16 positive divisors.
The sum of these divisors (counting 2155691871) is 1, the average is 0.0625.
Base
System
Value
2
Binary
10000000011111010011111101011111
3
Ternary
12120020022111022200
4
Quaternary
2000133103331133
5
Quinary
13403324114441
6
Senary
553523542543
8
Octal
20037237537
10
Decimal
2155691871
12
Duodecimal
501b2aa53
16
Hexadecimal
807d3f5f
20
Vigesimal
1ddd19db
36
Base36
znfyhr
md5
6c2ca41b64d05572e269cbc82ecf5e83
sha1
1d3d6f7a392742d69dd3e17dc134319a0f0956e3
sha256
24da5352bf9b077765860e66e02930d086fb6d7e42a2c8081c5ef2ac6d0a5f28
sha512
d62242d4d275df830f780090f53e2b59a153a0c56bb2b48a18911de27092576887955fb56c07a37b154c8a5a137ca5718f8c0ef01d0d937329f2d17db906f4db
ripemd-160
e3a9856b33981001a1cbe30fe08537855a22b7e6
Diameter
4311383742
Circumference
13544611490.674
Area
1.4599004443149E+19
Volume
4.196127360372E+28
Surface area
5.8396017772597E+19
Circumference
13544611490.674
Perimeter
8622767484
Area
4647007442695480641
Diagonal
3048608680.2656
Surface area
2.7882044656173E+19
Volume
1.0017516168695E+28
Space diagonal
3733767846.0352
Perimeter
6467075613
Area
2.0122132484748E+18
Altitude
1866883923.0176
Surface area
2.0122132484748E+18
Volume
1.180575602255E+27
Height
1016202893.4219