18881389 is an odd 8-digits prime number following 18881388
and preceding 18881390 . In scientific notation, it is written as 1.8881389 × 10^7.
The sum of its digits is 46. It has a total of 1 prime factors and 2 positive divisors.
There are 18881388 positive integers (up to 18881389) that are relatively prime to 18881389.
18881389 has 2 divisors, whose sum is 18881390
The reverse of 18881389 is 98318881
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 46 Digital Root 1
Name
eighteen million eight hundred eighty-one thousand three hundred eighty-nine
Scientific notation
1.8881389 × 10^7
Engineering notation
1.8881389 × 10^6
Prime Factorization
18881389
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
18881389 Product of the distinct prime numbers
The prime factorization of 18881389 is 18881389.
Since it has a total of 1 prime factors.
8 , 9 , 8 , 60 , 991 , 190 , 741 , 7767 , 52709 , 92489 , 194220 , 618287 , 2994095 , 457495 , 37714350 , 8189372 , 16736376 , 776266541 , 2058960858 , 2767269585
n×2
37762778
n×3
56644167
n×4
75525556
n×5
94406945
n÷2
9440694.5
n÷3
6293796.3333333
n÷3
4720347.25
n÷5
3776277.8
n2
356506850569321
n3
6.7313445267642E+21
n4
1.2709713450286E+29
n5
2.3997704373337E+36
2 √n4345.2720283085
3 √n266.28373910278
4 √n65.918677385916
5 √n28.523760941703
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
18881390 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
9440695 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
4345.2721433761 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999998940756 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 18881389 can be divided by 2 positive divisors.
The sum of these divisors (counting 18881389) is 18881390, the average is 9440695.
Base
System
Value
2
Binary
1001000000001101101101101
3
Ternary
1022112021101201
4
Quaternary
1020001231231
5
Quinary
14313201024
6
Senary
1512405501
8
Octal
110015555
10
Decimal
18881389
12
Duodecimal
63a6891
16
Hexadecimal
1201b6d
20
Vigesimal
5i0399
36
Base36
b8oz1
md5
200d6adf0538453567da7df3ba0f2795
sha1
dae44e8e84ac856e112bf4635b65a76630f076d5
sha256
0651e1d601e0f77bfbf68f49e9b76dc84020ac86eec00c7b364758f43d85237a
sha512
cc87c7e40817ef1f02b70ae3a54b6a0e1951f9f44a3b5462e196adac000e789c8dbff1fa3726b5e0b91e02f16500f2120356da6d090f3f80e0e740eafa4c5d50
ripemd-160
0940012366541307810bdda89a25f09f454ccda3
Diameter
37762778
Circumference
118635265.94394
Area
1.119999302703E+15
Volume
2.8196190018752E+22
Surface area
4.4799972108121E+15
Circumference
118635265.94394
Perimeter
75525556
Area
356506850569321
Diagonal
26702316.400242
Surface area
2139041103415926
Volume
6.7313445267642E+21
Space diagonal
32703525.065472
Perimeter
56644167
Area
1.5437199460811E+14
Altitude
16351762.532736
Surface area
1.5437199460811E+14
Volume
7.9329656022966E+20
Height
8900772.1334141