1990644845 is an odd 10-digits composite number following 1990644844
and preceding 1990644846 . In scientific notation, it is written as 1.990644845 × 10^9.
The sum of its digits is 50. It has a total of 4 prime factors and 12 positive divisors.
There are 1365013440 positive integers (up to 1990644845) that are relatively prime to 1990644845.
1990644845 has 12 divisors, whose sum is 2778778044
The reverse of 1990644845 is 5484460991
Previous prime number is 7
Is Prime? no Number parity odd Number length 10 Sum of Digits 50 Digital Root 5
Name
one billion nine hundred ninety million six hundred forty-four thousand eight hundred forty-five
Scientific notation
1.990644845 × 10^9
Engineering notation
1.990644845 × 10^9
Prime Factorization
5 × 7 × 7 × 8125081
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
4 Total number of prime factors
rad Radical
284377835 Product of the distinct prime numbers
The prime factorization of 1990644845 is 5 × 7 × 7 × 8125081.
Since it has a total of 4 prime factors.
6 , 10 , 23 , 51 , 856 , 166 , 6687 , 645 , 63181 , 63934 , 462007 , 146468 , 6081466 , 2614516 , 73888778 , 9504493 , 11667338 , 738727239 , 1357018084 , 405218120
n×2
3981289690
n×3
5971934535
n×4
7962579380
n×5
9953224225
n÷2
995322422.5
n÷3
663548281.66667
n÷3
497661211.25
n÷5
398128969
n2
3962666898925074025
n3
7.8882624347973E+27
n4
1.5702728951836E+37
n5
3.1258556440406E+46
2 √n44616.64313908
3 √n1257.9535194883
4 √n211.2265209179
5 √n72.410034885731
1 , 5 , 7 , 35 , 49 , 245 , 8125081 , 40625405 , 56875567 , 284377835 , 398128969 , 1990644845
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
-1990644844 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 1990644845 can be divided by 12 positive divisors.
The sum of these divisors (counting 1990644845) is 1, the average is 0.083333333333333.
Base
System
Value
2
Binary
1110110101001101101010001101101
3
Ternary
12010201202020100212
4
Quaternary
1312221231101231
5
Quinary
13034101113340
6
Senary
525310232205
8
Octal
16651552155
10
Decimal
1990644845
12
Duodecimal
4767b5665
16
Hexadecimal
76a6d46d
20
Vigesimal
1b21ac25
36
Base36
wx6fe5
md5
214dc48ff045c3662a7cd6bc8e035cd2
sha1
44b367ad193695fef7c67d44a475d5120ef287ea
sha256
512f42ed7072670ec934b7249a7d5ee301ad55d97a83c47c9b994e97ce8bd3bb
sha512
4624f8c4063df2cae63f6dfdc50e48726fbccaf61e3c0709a94a8151539ce48abad103a29a4404da4e2b94e5750cc20272d703cc71ea054e464b47affe7d460b
ripemd-160
bdc4afb1c060ed9f6c632c9318b6a1efd584011e
Diameter
3981289690
Circumference
12507590441.917
Area
1.2449085218286E+19
Volume
3.3042276419664E+28
Surface area
4.9796340873146E+19
Circumference
12507590441.917
Perimeter
7962579380
Area
3962666898925074025
Diagonal
2815196937.6671
Surface area
2.377600139355E+19
Volume
7.8882624347973E+27
Space diagonal
3447898011.3651
Perimeter
5971934535
Area
1.7158851006024E+18
Altitude
1723949005.6825
Surface area
1.7158851006024E+18
Volume
9.2964064323738E+26
Height
938398979.22236