1998454985 is an odd 10-digits composite number following 1998454984
and preceding 1998454986 . In scientific notation, it is written as 1.998454985 × 10^9.
The sum of its digits is 62. It has a total of 2 prime factors and 4 positive divisors.
There are 1598763984 positive integers (up to 1998454985) that are relatively prime to 1998454985.
1998454985 has 4 divisors, whose sum is 2398145988
The reverse of 1998454985 is 5894548991
Previous prime number is 5
Is Prime? no Number parity odd Number length 10 Sum of Digits 62 Digital Root 8
Name
one billion nine hundred ninety-eight million four hundred fifty-four thousand nine hundred eighty-five
Scientific notation
1.998454985 × 10^9
Engineering notation
1.998454985 × 10^9
Prime Factorization
5 × 399690997
Composite number
ω Distinct Factors
2 Total number of distinct prime factors
Ω Total Factors
2 Total number of prime factors
rad Radical
1998454985 Product of the distinct prime numbers
The prime factorization of 1998454985 is 5 × 399690997.
Since it has a total of 2 prime factors.
4 , 6 , 78 , 21 , 841 , 594 , 3135 , 469 , 44789 , 2716 , 260697 , 177775 , 8772488 , 6793443 , 96452208 , 93451832 , 964659743 , 447968607 , 9103926039 , 949518214
n×2
3996909970
n×3
5995364955
n×4
7993819940
n×5
9992274925
n÷2
999227492.5
n÷3
666151661.66667
n÷3
499613746.25
n÷5
399690997
n2
3993822327071350225
n3
7.98147413874E+27
n4
1.5950616780214E+37
n5
3.1876589618243E+46
2 √n44704.082419842
3 √n1259.5965334966
4 √n211.43339948987
5 √n72.466764951443
4 divisors
τ Total Divisors
4 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-1998454984 Sum of the proper positive divisors of n
A Arithmetic Mean
0.25 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
4 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1998454985 can be divided by 4 positive divisors.
The sum of these divisors (counting 1998454985) is 1, the average is 0.25.
Base
System
Value
2
Binary
1110111000111100000000011001001
3
Ternary
12011021110000212022
4
Quaternary
1313013200003021
5
Quinary
13043101024420
6
Senary
530145454225
8
Octal
16707400311
10
Decimal
1998454985
12
Duodecimal
479341375
16
Hexadecimal
771e00c9
20
Vigesimal
1b4a6h95
36
Base36
x1ttqh
md5
500381dd022a6dc7e949fe4a1adaff09
sha1
724d363a6ea9f42e6884ff6458d8d48d043418db
sha256
4e8c45af05979d6674194b462eb8996cc21d4e3de26c1cc833d7faaecd3e0ecd
sha512
3007226054ef9420f14999295e7de50da4482a64b3cea236061201486710905c77fdb5e6cb5620ba1e6406e36130bb0245bd4200cf745f3ea4b9f9175a87d7ec
ripemd-160
dca10673e8cc709ac02130068fbc1a0f9cb0e9e1
Diameter
3996909970
Circumference
12556662998.812
Area
1.254696288247E+19
Volume
3.343272069211E+28
Surface area
5.0187851529881E+19
Circumference
12556662998.812
Perimeter
7993819940
Area
3993822327071350225
Diagonal
2826242143.5791
Surface area
2.3962933962428E+19
Volume
7.98147413874E+27
Space diagonal
3461425570.6593
Perimeter
5995364955
Area
1.7293757967226E+18
Altitude
1730712785.3296
Surface area
1.7293757967226E+18
Volume
9.4062574789469E+26
Height
942080714.52637