1218394490 is an even 10-digits composite number following 1218394489
and preceding 1218394491 . In scientific notation, it is written as 1.218394490 × 10^9.
The sum of its digits is 41. It has a total of 3 prime factors and 8 positive divisors.
There are 487357792 positive integers (up to 1218394490) that are relatively prime to 1218394490.
1218394490 has 8 divisors, whose sum is 2193110100
The reverse of 1218394490 is 0944938121
Previous prime number is 5
Is Prime? no Number parity even Number length 10 Sum of Digits 41 Digital Root 5
Name
one billion two hundred eighteen million three hundred ninety-four thousand four hundred ninety
Scientific notation
1.218394490 × 10^9
Engineering notation
1.218394490 × 10^9
Prime Factorization
2 × 5 × 121839449
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
1218394490 Product of the distinct prime numbers
The prime factorization of 1218394490 is 2 × 5 × 121839449.
Since it has a total of 3 prime factors.
3 , 9 , 98 , 56 , 680 , 49 , 7835 , 2360 , 44699 , 22903 , 598216 , 248006 , 2997413 , 799129 , 91861657 , 30613330 , 271655582 , 548102681 , 7968005975 , 5352771029
n×2
2436788980
n×3
3655183470
n×4
4873577960
n×5
6091972450
n÷2
609197245
n÷3
406131496.66667
n÷3
304598622.5
n÷5
243678898
n2
1484485133262360100
n3
1.8086885068538E+27
n4
2.203696110877E+36
n5
2.6849711991269E+45
2 √n34905.508018076
3 √n1068.06079893
4 √n186.83015821349
5 √n65.638339409102
8 divisors
τ Total Divisors
8 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-1218394489 Sum of the proper positive divisors of n
A Arithmetic Mean
0.125 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
8 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1218394490 can be divided by 8 positive divisors.
The sum of these divisors (counting 1218394490) is 1, the average is 0.125.
Base
System
Value
2
Binary
1001000100111110011100101111010
3
Ternary
10010220121212000212
4
Quaternary
1020213303211322
5
Quinary
4443402110430
6
Senary
320522231122
8
Octal
11047634572
10
Decimal
1218394490
12
Duodecimal
2a00554a2
16
Hexadecimal
489f397a
20
Vigesimal
j0ej64a
36
Base36
k5ef7e
md5
c96ea03c6940d7b087019aaa480994f0
sha1
40e02d1d94614ce6e623677aca0ec64a6a61723b
sha256
29d45928941646425167e66eb1fa035c96bf458ec70b697a4d3b8ad8ca39286b
sha512
3bb862e4092e597510b10cdb98cab618a45a2a882cb0d6976e83589e3a5f1b27e83a3999802150db74d5a5ce3012925dc0a4e82eacf61f73dded0d9a46ee3a3a
ripemd-160
08f433c703f02c69b0c4a6b2adcd6591b3361cff
Diameter
2436788980
Circumference
7655398357.9166
Area
4.6636475890203E+18
Volume
7.5762167010188E+27
Surface area
1.8654590356081E+19
Circumference
7655398357.9166
Perimeter
4873577960
Area
1484485133262360100
Diagonal
1723070012.0787
Surface area
8906910799574160600
Volume
1.8086885068538E+27
Space diagonal
2110321160.342
Perimeter
3655183470
Area
6.4280091847277E+17
Altitude
1055160580.171
Surface area
6.4280091847277E+17
Volume
2.1315598470841E+26
Height
574356670.69288