18181009 is an odd 8-digits composite number following 18181008
and preceding 18181010 . In scientific notation, it is written as 1.8181009 × 10^7.
The sum of its digits is 28. It has a total of 3 prime factors and 8 positive divisors.
There are 13970880 positive integers (up to 18181009) that are relatively prime to 18181009.
18181009 has 8 divisors, whose sum is 20836160
The reverse of 18181009 is 90018181
Previous prime number is 6853
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 28
Digital Root 1
Name
eighteen million one hundred eighty-one thousand nine
Scientific notation
1.8181009 × 10^7
Engineering notation
1.8181009 × 10^6
Prime Factorization
7 × 6853 × 379
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
18181009
Product of the distinct prime numbers
The prime factorization of 18181009 is 7 × 6853 × 379.
Since it has a total of 3 prime factors.
3 , 6 , 42 , 61 , 91 , 787 , 8946 , 8446 , 22330 , 40677 , 467543 , 117339 , 6411458 , 9372054 , 3396453 , 46024720 , 83795088 , 521545573 , 5787216453 , 4976792057
n×2
36362018
n×3
54543027
n×4
72724036
n×5
90905045
n÷2
9090504.5
n÷3
6060336.3333333
n÷3
4545252.25
n÷5
3636201.8
n2
330549088258081
n3
6.009715948562E+21
n4
1.0926269974825E+29
n5
1.9865061274872E+36
2 √n
4263.9194410777
3 √n
262.94968845856
4 √n
65.298694022757
5 √n
28.308939244765
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
-18181008
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 18181009 can be divided by 8 positive divisors.
The sum of these divisors (counting 18181009) is 1, the average is 0.125.
Base
System
Value
2
Binary
1000101010110101110010001
3
Ternary
1021012200122201
4
Quaternary
1011112232101
5
Quinary
14123243014
6
Senary
1445403201
8
Octal
105265621
10
Decimal
18181009
12
Duodecimal
6109501
16
Hexadecimal
1156b91
20
Vigesimal
5dcca9
36
Base36
atok1
md5
ccaaa2c849dfbe5bca368ed64f0e6b1b
sha1
6b4f803a83a1fc19717c8d5ac26004406375dc07
sha256
9d4785e509518cd84421939f352796323d08bb612b22d6321ebfb7057f67d468
sha512
ee11139324da115d916c9500ad2b448d1f85e29c315c84a6871745c6e34a5e027b3cd10b066b931d1bc6e27e487921285b71b69c3b725cc4491ecc8ef500e08f
ripemd-160
0500b3e6659613905da2208386582ae5be1f5d48
Diameter
36362018
Circumference
114234648.6185
Area
1.0384505873224E+15
Volume
2.5173439298885E+22
Surface area
4.1538023492896E+15
Circumference
114234648.6185
Perimeter
72724036
Area
330549088258081
Diagonal
25711829.505427
Surface area
1983294529548486
Volume
6.009715948562E+21
Space diagonal
31490431.320867
Perimeter
54543027
Area
1.4313195381464E+14
Altitude
15745215.660434
Surface area
1.4313195381464E+14
Volume
7.0825181670552E+20
Height
8570609.8351424