18381649 is an odd 8-digits composite number following 18381648
and preceding 18381650 . In scientific notation, it is written as 1.8381649 × 10^7.
The sum of its digits is 40. It has a total of 4 prime factors and 16 positive divisors.
There are 15321600 positive integers (up to 18381649) that are relatively prime to 18381649.
18381649 has 16 divisors, whose sum is 21740544
The reverse of 18381649 is 94618381
Previous prime number is 191
Is Prime? no
Number parity odd
Number length 8
Sum of Digits 40
Digital Root 4
Name
eighteen million three hundred eighty-one thousand six hundred forty-nine
Scientific notation
1.8381649 × 10^7
Engineering notation
1.8381649 × 10^6
Prime Factorization
11 × 13 × 191 × 673
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
18381649
Product of the distinct prime numbers
The prime factorization of 18381649 is 11 × 13 × 191 × 673.
Since it has a total of 4 prime factors.
3 , 8 , 19 , 1 , 823 , 36 , 5022 , 3542 , 18123 , 28727 , 128956 , 76635 , 5217742 , 6633144 , 40114894 , 23347780 , 61096242 , 277297350 , 8799034026 , 7119805615
n×2
36763298
n×3
55144947
n×4
73526596
n×5
91908245
n÷2
9190824.5
n÷3
6127216.3333333
n÷3
4595412.25
n÷5
3676329.8
n2
337885019959201
n3
6.210883839248E+21
n4
1.1416628671283E+29
n5
2.0985646099886E+36
2 √n
4287.382534834
3 √n
263.91342910635
4 √n
65.478107294225
5 √n
28.371146987376
1 , 11 , 13 , 143 , 191 , 673 , 2101 , 2483 , 7403 , 8749 , 27313 , 96239 , 128543 , 1413973 , 1671059 , 18381649
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-18381648
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
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
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 18381649 can be divided by 16 positive divisors.
The sum of these divisors (counting 18381649) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1000110000111101101010001
3
Ternary
1021120212212211
4
Quaternary
1012013231101
5
Quinary
14201203044
6
Senary
1453552121
8
Octal
106075521
10
Decimal
18381649
12
Duodecimal
61a5641
16
Hexadecimal
1187b51
20
Vigesimal
5ehe29
36
Base36
axzdd
md5
24e36b5ca5bec93419488271bd0b8856
sha1
8f18403d9cbebe9bb55f9e9197a00768292d570d
sha256
408742e203d6be0a55650a778e5032b41409fda53043859f9a5f467c7ade499e
sha512
bb9e662353a9ed54e934db1fcf69e79171e4a674e8c8c7455034f72ea4d5b6b7243cbad26cd81473ac56a2275f92bc7bf0c49e746785552d0f6f225b2a620679
ripemd-160
2c3048e271e4705fb4867c65c2b5696304c952eb
Diameter
36763298
Circumference
115495306.91853
Area
1.0614970964619E+15
Volume
2.6016089388908E+22
Surface area
4.2459883858475E+15
Circumference
115495306.91853
Perimeter
73526596
Area
337885019959201
Diagonal
25995577.314582
Surface area
2027310119755206
Volume
6.210883839248E+21
Space diagonal
31837949.994898
Perimeter
55144947
Area
1.4630850542144E+14
Altitude
15918974.997449
Surface area
1.4630850542144E+14
Volume
7.3195967998237E+20
Height
8665192.4381939