181820109 is an odd 9-digits composite number following 181820108
and preceding 181820110 . In scientific notation, it is written as 1.81820109 × 10^8.
The sum of its digits is 30. It has a total of 2 prime factors and 4 positive divisors.
There are 117937296 positive integers (up to 181820109) that are relatively prime to 181820109.
181820109 has 4 divisors, whose sum is 183458240
The reverse of 181820109 is 901028181
Previous prime number is 111
Is Prime? no
Number parity odd
Number length 9
Sum of Digits 30
Digital Root 3
Name
one hundred eighty-one million eight hundred twenty thousand one hundred nine
Scientific notation
1.81820109 × 10^8
Engineering notation
1.81820109 × 10^6
Prime Factorization
111 × 1638019
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
181820109
Product of the distinct prime numbers
The prime factorization of 181820109 is 111 × 1638019.
Since it has a total of 2 prime factors.
1 , 9 , 12 , 23 , 689 , 699 , 633 , 7709 , 93556 , 46990 , 764823 , 989381 , 6998608 , 9762123 , 90181936 , 45009362 , 810336444 , 149864287 , 6513284868 , 3449717687
n×2
363640218
n×3
545460327
n×4
727280436
n×5
909100545
n÷2
90910054.5
n÷3
60606703
n÷3
45455027.25
n÷5
36364021.8
n2
33058552036771881
n3
6.010709534708E+24
n4
1.092867862768E+33
n5
1.9870535393107E+41
2 √n
13484.06871089
3 √n
566.51833653226
4 √n
116.12092279555
5 √n
44.86713957674
4 divisors
τ
Total Divisors
4
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-181820108
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.25
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
4
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 181820109 can be divided by 4 positive divisors.
The sum of these divisors (counting 181820109) is 1, the average is 0.25.
Base
System
Value
2
Binary
1010110101100101101011001101
3
Ternary
110200010102022010
4
Quaternary
22311211223031
5
Quinary
333021220414
6
Senary
30013011433
8
Octal
1265455315
10
Decimal
181820109
12
Duodecimal
50a83b79
16
Hexadecimal
ad65acd
20
Vigesimal
2gg7a59
36
Base36
3091al
md5
13985dd8dd956ffdff93456f8b843df9
sha1
9369c7737a5b1c3d80b7ab200a89f4480fa76222
sha256
9018beb5ccb2099d5db8415c943c47b1f57d9b5f4305ede3cae2f7a0816a5e13
sha512
1a2012670cd228affda2e31f47e980f40ff8f1e0b1a78ca534f7f7aeb19f6d2014b26c9e1542118de68d4766e11c16fe0d3f53ef152bf38bd84215ffb84039ae
ripemd-160
4e30f470f15c6efa17506be89e64a42e364b2ff5
Diameter
363640218
Circumference
1142409437.4186
Area
1.0385650421704E+17
Volume
2.5177601222801E+25
Surface area
4.1542601686815E+17
Circumference
1142409437.4186
Perimeter
727280436
Area
33058552036771881
Diagonal
257132464.05995
Surface area
198351312220631286
Volume
6.010709534708E+24
Space diagonal
314921666.62571
Perimeter
545460327
Area
1.4314772938087E+16
Altitude
157460833.31286
Surface area
1.4314772938087E+16
Volume
7.0836891195578E+23
Height
85710821.353318