18389979 is an odd 8-digits composite number following 18389978
and preceding 18389980 . In scientific notation, it is written as 1.8389979 × 10^7.
The sum of its digits is 54. It has a total of 3 prime factors and 8 positive divisors.
There are 12138000 positive integers (up to 18389979) that are relatively prime to 18389979.
18389979 has 8 divisors, whose sum is 20636640
The reverse of 18389979 is 97998381
Previous prime number is 101
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 54
Digital Root 9
Name
eighteen million three hundred eighty-nine thousand nine hundred seventy-nine
Scientific notation
1.8389979 × 10^7
Engineering notation
1.8389979 × 10^6
Prime Factorization
9 × 101 × 20231
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
18389979
Product of the distinct prime numbers
The prime factorization of 18389979 is 9 × 101 × 20231.
Since it has a total of 3 prime factors.
1 , 9 , 57 , 30 , 931 , 231 , 7545 , 9990 , 58250 , 11696 , 624500 , 221233 , 1991790 , 2977226 , 79315018 , 69808557 , 995398702 , 342924444 , 5409042660 , 4453967853
n×2
36779958
n×3
55169937
n×4
73559916
n×5
91949895
n÷2
9194989.5
n÷3
6129993
n÷3
4597494.75
n÷5
3677995.8
n2
338191327620441
n3
6.219331412922E+21
n4
1.1437337407768E+29
n5
2.1033239474476E+36
2 √n
4288.3538799871
3 √n
263.95328891193
4 √n
65.485524201819
5 √n
28.373717908263
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
-18389978
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 18389979 can be divided by 8 positive divisors.
The sum of these divisors (counting 18389979) is 1, the average is 0.125.
Base
System
Value
2
Binary
1000110001001101111011011
3
Ternary
1021121022022100
4
Quaternary
1012021233123
5
Quinary
14201434404
6
Senary
1454054443
8
Octal
106115733
10
Decimal
18389979
12
Duodecimal
61aa423
16
Hexadecimal
1189bdb
20
Vigesimal
5eieij
36
Base36
ay5sr
md5
cbe1058e5d3532c197583e58b6668611
sha1
7e22e89d89433b8053755e406dd943f8c7a91abf
sha256
439c7a42de4914bfcd6015c4153139ccd49c077bbd727ec711c8b4e4ccc7fd96
sha512
50e046b3e1ef220b91e5d8013f3fca73e4fc8e3eb1b34050fed6505875f8a0c47ca11c8f75dcedced998c58ba503b95f993691dcf0569b8d0322ba88a1d52c51
ripemd-160
744c15d1f40b117961026b46534d84388e7e05ac
Diameter
36779958
Circumference
115547645.85214
Area
1.0624593903602E+15
Volume
2.6051474502768E+22
Surface area
4.2498375614406E+15
Circumference
115547645.85214
Perimeter
73559916
Area
338191327620441
Diagonal
26007357.713556
Surface area
2029147965722646
Volume
6.219331412922E+21
Space diagonal
31852377.978125
Perimeter
55169937
Area
1.4644114052944E+14
Altitude
15926188.989062
Surface area
1.4644114052944E+14
Volume
7.3295523608728E+20
Height
8669119.2378521