2018991 is an odd 7-digits composite number following 2018990
and preceding 2018992 . In scientific notation, it is written as 2.018991 × 10^6.
The sum of its digits is 30. It has a total of 3 prime factors and 8 positive divisors.
There are 1242432 positive integers (up to 2018991) that are relatively prime to 2018991.
2018991 has 8 divisors, whose sum is 2899120
The reverse of 2018991 is 1998102
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 30
Digital Root 3
Name
two million eighteen thousand nine hundred ninety-one
Scientific notation
2.018991 × 10^6
Engineering notation
2.018991 × 10^6
Prime Factorization
3 × 13 × 51769
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
2018991
Product of the distinct prime numbers
The prime factorization of 2018991 is 3 × 13 × 51769.
Since it has a total of 3 prime factors.
3 , 6 , 38 , 22 , 868 , 768 , 5334 , 3179 , 68568 , 32471 , 868049 , 143575 , 7127362 , 7170794 , 69729618 , 512164 , 525648687 , 277776023 , 8679935710 , 2565696282
n×2
4037982
n×3
6056973
n×4
8075964
n×5
10094955
n÷2
1009495.5
n÷3
672997
n÷3
504747.75
n÷5
403798.2
n2
4076324658081
n3
8230062797743616271
n4
1.6616422718079E+25
n5
3.3548407919997E+31
2 √n
1420.9120310561
3 √n
126.389635393
4 √n
37.694986815969
5 √n
18.240085788036
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
-2018990
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 2018991 can be divided by 8 positive divisors.
The sum of these divisors (counting 2018991) is 1, the average is 0.125.
Base
System
Value
2
Binary
111101100111010101111
3
Ternary
10210120112110
4
Quaternary
13230322233
5
Quinary
1004101431
6
Senary
111135103
8
Octal
7547257
10
Decimal
2018991
12
Duodecimal
814493
16
Hexadecimal
1eceaf
20
Vigesimal
cc79b
36
Base36
179v3
md5
ab18a0de775c80aa7ba7ce6158113dfd
sha1
1a4a6acd0b5cae4ceaa7d576e8927be22dc48df9
sha256
ea68e3096c8b032189514de4f2d185a934491d1c9800479b4ffc2c1ed8a29f77
sha512
1c9b3435e12983943c0c86e279d589bbde1d0690f0f76eafd941516d7fc8e9971a01f2e86708c24e4bfda1d514e8a617101dfe24b742abafd1a448cbaf6a81ae
ripemd-160
dfded0c8d29ece092febc9b646d53ab804a92472
Diameter
4037982
Circumference
12685694.586528
Area
12806151599474
Volume
3.4474006431965E+19
Surface area
51224606397897
Circumference
12685694.586528
Perimeter
8075964
Area
4076324658081
Diagonal
2855284.4545092
Surface area
24457947948486
Volume
8230062797743616271
Space diagonal
3496994.9920243
Perimeter
6056973
Area
1765100353985.5
Altitude
1748497.4960121
Surface area
1765100353985.5
Volume
9.6992220231261E+17
Height
951761.48483641