18993889 is an odd 8-digits prime number following 18993888
and preceding 18993890 . In scientific notation, it is written as 1.8993889 × 10^7.
The sum of its digits is 55. It has a total of 1 prime factors and 2 positive divisors.
There are 18993888 positive integers (up to 18993889) that are relatively prime to 18993889.
18993889 has 2 divisors, whose sum is 18993890
The reverse of 18993889 is 98839981
Previous prime number is 1
Is Prime? yes Number parity odd Number length 8 Sum of Digits 55 Digital Root 1
Name
eighteen million nine hundred ninety-three thousand eight hundred eighty-nine
Scientific notation
1.8993889 × 10^7
Engineering notation
1.8993889 × 10^6
Prime Factorization
18993889
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
18993889 Product of the distinct prime numbers
The prime factorization of 18993889 is 18993889.
Since it has a total of 1 prime factors.
7 , 8 , 100 , 42 , 2 , 389 , 2131 , 2405 , 93026 , 38617 , 395800 , 393267 , 9956237 , 7977760 , 52059752 , 51944595 , 440487029 , 876115566 , 9230768594 , 8709226111
n×2
37987778
n×3
56981667
n×4
75975556
n×5
94969445
n÷2
9496944.5
n÷3
6331296.3333333
n÷3
4748472.25
n÷5
3798777.8
n2
360767819344321
n3
6.8523839153981E+21
n4
1.3015341947446E+29
n5
2.4721196024683E+36
2 √n4358.1979073925
3 √n266.81155373004
4 √n66.016648713733
5 √n28.557670549825
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
18993890 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
9496945 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
4358.1980221188 Returns the nth root of the product of n divisors
H Harmonic Mean
1.999999894703 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 18993889 can be divided by 2 positive divisors.
The sum of these divisors (counting 18993889) is 18993890, the average is 9496945.
Base
System
Value
2
Binary
1001000011101001011100001
3
Ternary
1022201222201101
4
Quaternary
1020131023201
5
Quinary
14330301024
6
Senary
1515034401
8
Octal
110351341
10
Decimal
18993889
12
Duodecimal
643ba01
16
Hexadecimal
121d2e1
20
Vigesimal
5ie4e9
36
Base36
bb3s1
md5
8c6c523a0e5fa087eff00df8d15e3547
sha1
2c94dc42d3f585fc755db6ae9d89eba84b9ed605
sha256
3886d5a7b6059e19c9e22360a4ab60bc5c1eafdc760a342a131ecdf84cd3cd6c
sha512
f56494c6006aa1f5d351e137aace22132634d1bff55a9c92c81eb9427af56aac6a40f77afb30b705025f279370f18ede6ecbb05a5e18b11cb14ea634d6274136
ripemd-160
6d3f7e62c05be3ea940d94296ec4264eae47704d
Diameter
37987778
Circumference
119342124.291
Area
1.1333855309037E+15
Volume
2.8703198624255E+22
Surface area
4.5335421236149E+15
Circumference
119342124.291
Perimeter
75975556
Area
360767819344321
Diagonal
26861415.426009
Surface area
2164606916065926
Volume
6.8523839153981E+21
Space diagonal
32898380.781324
Perimeter
56981667
Area
1.5621704821005E+14
Altitude
16449190.390662
Surface area
1.5621704821005E+14
Volume
8.075611889786E+20
Height
8953805.142003