1990657988 is an even 10-digits composite number following 1990657987
and preceding 1990657989 . In scientific notation, it is written as 1.990657988 × 10^9.
The sum of its digits is 62. It has a total of 4 prime factors and 12 positive divisors.
There are 904844520 positive integers (up to 1990657988) that are relatively prime to 1990657988.
1990657988 has 12 divisors, whose sum is 3800347152
The reverse of 1990657988 is 8897560991
Previous prime number is 11
Is Prime? no Number parity even Number length 10 Sum of Digits 62 Digital Root 8
Name
one billion nine hundred ninety million six hundred fifty-seven thousand nine hundred eighty-eight
Scientific notation
1.990657988 × 10^9
Engineering notation
1.990657988 × 10^9
Prime Factorization
2 × 2 × 11 × 45242227
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
4 Total number of prime factors
rad Radical
995328994 Product of the distinct prime numbers
The prime factorization of 1990657988 is 2 × 2 × 11 × 45242227.
Since it has a total of 4 prime factors.
5 , 4 , 52 , 25 , 299 , 4 , 5620 , 1830 , 71215 , 21551 , 792861 , 915763 , 9098480 , 3653156 , 57829928 , 11546145 , 661055444 , 251214599 , 4649089146 , 4114839631
n×2
3981315976
n×3
5971973964
n×4
7962631952
n×5
9953289940
n÷2
995328994
n÷3
663552662.66667
n÷3
497664497
n÷5
398131597.6
n2
3962719225188208144
n3
7.8884186798221E+27
n4
1.5703143657676E+37
n5
3.1259588358865E+46
2 √n44616.790426923
3 √n1257.9562879793
4 √n211.22686956664
5 √n72.410130501237
1 , 2 , 4 , 11 , 22 , 44 , 45242227 , 90484454 , 180968908 , 497664497 , 995328994 , 1990657988
12 divisors
τ Total Divisors
12 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-1990657987 Sum of the proper positive divisors of n
A Arithmetic Mean
0.083333333333333 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
12 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1990657988 can be divided by 12 positive divisors.
The sum of these divisors (counting 1990657988) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1110110101001110000011111000100
3
Ternary
12010201202220101122
4
Quaternary
1312221300133010
5
Quinary
13034102023423
6
Senary
525310413112
8
Octal
16651603704
10
Decimal
1990657988
12
Duodecimal
476801198
16
Hexadecimal
76a707c4
20
Vigesimal
1b21c4j8
36
Base36
wx6pj8
md5
cd7f09d1646544777f77bd1c8103d669
sha1
4b0c87816d5e570a2348e917c9ea059ced7b97ec
sha256
69eb157eafb4d2e153f1f5b8a2556a986e82f01851e393fafa6733e36db6de47
sha512
31bef0e04d1eb374d484647620506dc7956d11632decf4d06d268daadd382d8793bd4b5c5ebe0ac183fcf7fffc680199038a5c8556f711c503f2b5fba199d257
ripemd-160
0eb74358324a7d9f5bc3eaa3da93ae1f75373bfc
Diameter
3981315976
Circumference
12507673021.821
Area
1.244924960609E+19
Volume
3.3042930897293E+28
Surface area
4.9796998424361E+19
Circumference
12507673021.821
Perimeter
7962631952
Area
3962719225188208144
Diagonal
2815215524.6759
Surface area
2.3776315351129E+19
Volume
7.8884186798221E+27
Space diagonal
3447920775.7088
Perimeter
5971973964
Area
1.715907758539E+18
Altitude
1723960387.8544
Surface area
1.715907758539E+18
Volume
9.2965905689014E+26
Height
938405174.89198