18390949 is an odd 8-digits composite number following 18390948
and preceding 18390950 . In scientific notation, it is written as 1.8390949 × 10^7.
The sum of its digits is 43. It has a total of 2 prime factors and 4 positive divisors.
There are 18079180 positive integers (up to 18390949) that are relatively prime to 18390949.
18390949 has 4 divisors, whose sum is 18702720
The reverse of 18390949 is 94909381
Previous prime number is 59
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 43
Digital Root 7
Name
eighteen million three hundred ninety thousand nine hundred forty-nine
Scientific notation
1.8390949 × 10^7
Engineering notation
1.8390949 × 10^6
Prime Factorization
59 × 311711
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
18390949
Product of the distinct prime numbers
The prime factorization of 18390949 is 59 × 311711.
Since it has a total of 2 prime factors.
7 , 8 , 41 , 29 , 693 , 239 , 6879 , 8154 , 46901 , 36735 , 917537 , 354826 , 1885394 , 5252422 , 35282729 , 59883199 , 710203671 , 431369570 , 1255997651 , 9843172656
n×2
36781898
n×3
55172847
n×4
73563796
n×5
91954745
n÷2
9195474.5
n÷3
6130316.3333333
n÷3
4597737.25
n÷5
3678189.8
n2
338227005120601
n3
6.2203156015957E+21
n4
1.1439750699285E+29
n5
2.1038787168327E+36
2 √n
4288.4669755053
3 √n
263.95792966743
4 √n
65.486387711534
5 √n
28.374017222642
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
-18390948
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 18390949 can be divided by 4 positive divisors.
The sum of these divisors (counting 18390949) is 1, the average is 0.25.
Base
System
Value
2
Binary
1000110001001111110100101
3
Ternary
1021121100122021
4
Quaternary
1012021332211
5
Quinary
14202002244
6
Senary
1454103141
8
Octal
106117645
10
Decimal
18390949
12
Duodecimal
61aaab1
16
Hexadecimal
1189fa5
20
Vigesimal
5eih79
36
Base36
ay6jp
md5
2daea75025f15cdf5db7c11195c55027
sha1
fbd553206f6aa77d81c4467b7c2cebe3a8b85e5e
sha256
e2230fb541d578204cdace4d885c8ac5df4f16c5b42d4df1fad0546381e3ce5b
sha512
badc08077926720e8ddc3e6ed50a63fba91a0855c8ae3b6b1c56316d1f061996eb310f89433664485dc99c5ae1befcf64014e38fb3b39185010e5c82af714137
ripemd-160
bc6b6cabbe5346e146d60c6ece3f39bd62781f1b
Diameter
36781898
Circumference
115553740.54189
Area
1.0625714745326E+15
Volume
2.6055597062644E+22
Surface area
4.2502858981302E+15
Circumference
115553740.54189
Perimeter
73563796
Area
338227005120601
Diagonal
26008729.500712
Surface area
2029362030723606
Volume
6.2203156015957E+21
Space diagonal
31854058.067408
Perimeter
55172847
Area
1.4645658934018E+14
Altitude
15927029.033704
Surface area
1.4645658934018E+14
Volume
7.330712238348E+20
Height
8669576.5002373