18381821 is an odd 8-digits prime number following 18381820
and preceding 18381822 . In scientific notation, it is written as 1.8381821 × 10^7.
The sum of its digits is 32. It has a total of 1 prime factors and 2 positive divisors.
There are 18381820 positive integers (up to 18381821) that are relatively prime to 18381821.
18381821 has 2 divisors, whose sum is 18381822
The reverse of 18381821 is 12818381
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 8
Sum of Digits 32
Digital Root 5
Name
eighteen million three hundred eighty-one thousand eight hundred twenty-one
Scientific notation
1.8381821 × 10^7
Engineering notation
1.8381821 × 10^6
Prime Factorization
18381821
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
18381821
Product of the distinct prime numbers
The prime factorization of 18381821 is 18381821.
Since it has a total of 1 prime factors.
5 , 1 , 63 , 66 , 566 , 472 , 5374 , 438 , 55646 , 37291 , 694952 , 158193 , 7156245 , 8478787 , 37047602 , 55835387 , 362134767 , 204551105 , 1153189218 , 941119272
n×2
36763642
n×3
55145463
n×4
73527284
n×5
91909105
n÷2
9190910.5
n÷3
6127273.6666667
n÷3
4595455.25
n÷5
3676364.2
n2
337891343276041
n3
6.2110581895497E+21
n4
1.1417055986089E+29
n5
2.0986627948326E+36
2 √n
4287.4025936457
3 √n
263.9142522637
4 √n
65.478260465942
5 √n
28.37120008184
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
18381822
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
9190911
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
4287.4027102664
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999998911969
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 18381821 can be divided by 2 positive divisors.
The sum of these divisors (counting 18381821) is 18381822, the average is 9190911.
Base
System
Value
2
Binary
1000110000111101111111101
3
Ternary
1021120220010012
4
Quaternary
1012013233331
5
Quinary
14201204241
6
Senary
1453553005
8
Octal
106075775
10
Decimal
18381821
12
Duodecimal
61a5765
16
Hexadecimal
1187bfd
20
Vigesimal
5eheb1
36
Base36
axzi5
md5
5ffdc75899460dd4ed053a8169d12cc9
sha1
8279c7a15b95dd02ba82bc89e6495bf342580555
sha256
27fab8562fff1ae42291e5981e3b52818816c94fba9aedd99d3bfb5760a59978
sha512
173d4a7f65618405629d3c50e7274b581d8a89dd2f6611f3b00156e1a9d3913365426bce09627efc0da75b648d11f5c1528cad94d5789eb0ceb10e7ff5f148ad
ripemd-160
ba19f3765a50a2fc13091f088faaa28821ee0a4e
Diameter
36763642
Circumference
115496387.62641
Area
1.0615169617476E+15
Volume
2.6016819705744E+22
Surface area
4.2460678469904E+15
Circumference
115496387.62641
Perimeter
73527284
Area
337891343276041
Diagonal
25995820.559315
Surface area
2027348059656246
Volume
6.2110581895497E+21
Space diagonal
31838247.907637
Perimeter
55145463
Area
1.4631124349795E+14
Altitude
15919123.953818
Surface area
1.4631124349795E+14
Volume
7.3198022736248E+20
Height
8665273.5197715