18993881 is an odd 8-digits prime number following 18993880
and preceding 18993882 . In scientific notation, it is written as 1.8993881 × 10^7.
The sum of its digits is 47. It has a total of 1 prime factors and 2 positive divisors.
There are 18993880 positive integers (up to 18993881) that are relatively prime to 18993881.
18993881 has 2 divisors, whose sum is 18993882
The reverse of 18993881 is 18839981
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 47
Digital Root 2
Name
eighteen million nine hundred ninety-three thousand eight hundred eighty-one
Scientific notation
1.8993881 × 10^7
Engineering notation
1.8993881 × 10^6
Prime Factorization
18993881
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
18993881
Product of the distinct prime numbers
The prime factorization of 18993881 is 18993881.
Since it has a total of 1 prime factors.
9 , 5 , 100 , 52 , 666 , 968 , 451 , 3533 , 32927 , 17374 , 594117 , 526462 , 1209285 , 8461903 , 82939654 , 6618330 , 929479387 , 48124804 , 3980422624 , 2914386795
n×2
37987762
n×3
56981643
n×4
75975524
n×5
94969405
n÷2
9496940.5
n÷3
6331293.6666667
n÷3
4748470.25
n÷5
3798776.2
n2
360767515442161
n3
6.8523752569741E+21
n4
1.3015320019831E+29
n5
2.4721143963359E+36
2 √n
4358.1969895818
3 √n
266.81151627075
4 √n
66.016641762375
5 √n
28.557668144195
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
18993882
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
9496941
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4358.1971043082
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999998947029
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 18993881 can be divided by 2 positive divisors.
The sum of these divisors (counting 18993881) is 18993882, the average is 9496941.
Base
System
Value
2
Binary
1001000011101001011011001
3
Ternary
1022201222201002
4
Quaternary
1020131023121
5
Quinary
14330301011
6
Senary
1515034345
8
Octal
110351331
10
Decimal
18993881
12
Duodecimal
643b9b5
16
Hexadecimal
121d2d9
20
Vigesimal
5ie4e1
36
Base36
bb3rt
md5
8e3edfe63635390f8874a997a6c3be1d
sha1
22a8aed28e0ddd43ca42ffeb414a4abe5637fe18
sha256
c1dc83c07fae0c0c1618b23578d86499e839ddc5b00e2a26b3a81679daf08e7b
sha512
8c0c8bc1f42cb61e00ba5827347a226ad4e4883997cd93642472f856e56f9d54bdd87f7917c940c3716b65c65f217e5d280a6038d34ceff38ce8db311bb738e1
ripemd-160
d5ce5ee11052c48be1d9bc8c50c87c7971084f61
Diameter
37987762
Circumference
119342074.02552
Area
1.1333845761669E+15
Volume
2.8703162355934E+22
Surface area
4.5335383046677E+15
Circumference
119342074.02552
Perimeter
75975524
Area
360767515442161
Diagonal
26861404.112301
Surface area
2164605092652966
Volume
6.8523752569741E+21
Space diagonal
32898366.924917
Perimeter
56981643
Area
1.5621691661655E+14
Altitude
16449183.462459
Surface area
1.5621691661655E+14
Volume
8.0756016857355E+20
Height
8953801.3707669