2181219989 is an odd 10-digits composite number following 2181219988
and preceding 2181219990 . In scientific notation, it is written as 2.181219989 × 10^9.
The sum of its digits is 50. It has a total of 2 prime factors and 4 positive divisors.
There are 2013433824 positive integers (up to 2181219989) that are relatively prime to 2181219989.
2181219989 has 4 divisors, whose sum is 2349006156
The reverse of 2181219989 is 9899121812
Previous prime number is 13
Is Prime? no
Number parity odd
Number length 10
Sum of Digits 50
Digital Root 5
Name
two billion one hundred eighty-one million two hundred nineteen thousand nine hundred eighty-nine
Scientific notation
2.181219989 × 10^9
Engineering notation
2.181219989 × 10^9
Prime Factorization
13 × 167786153
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
2181219989
Product of the distinct prime numbers
The prime factorization of 2181219989 is 13 × 167786153.
Since it has a total of 2 prime factors.
8 , 9 , 81 , 10 , 782 , 142 , 189 , 2575 , 26528 , 88026 , 396534 , 9845 , 3556492 , 1993139 , 26631580 , 85936543 , 507703995 , 642383108 , 7558617024 , 5293999224
n×2
4362439978
n×3
6543659967
n×4
8724879956
n×5
10906099945
n÷2
1090609994.5
n÷3
727073329.66667
n÷3
545304997.25
n÷5
436243997.8
n2
4757720640413160121
n3
1.0377635362947E+28
n4
2.2635905692213E+37
n5
4.9373889964975E+46
2 √n
46703.532939169
3 √n
1296.8800902178
4 √n
216.11000194153
5 √n
73.74624192992
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
-2181219988
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 2181219989 can be divided by 4 positive divisors.
The sum of these divisors (counting 2181219989) is 1, the average is 0.25.
Base
System
Value
2
Binary
10000010000000101100011010010101
3
Ternary
12122000100110022112
4
Quaternary
2002000230122111
5
Quinary
13431343014424
6
Senary
1000235040405
8
Octal
20200543225
10
Decimal
2181219989
12
Duodecimal
50a5a0105
16
Hexadecimal
8202c695
20
Vigesimal
1e1cc9j9
36
Base36
102n445
md5
82362a81476ef0d60b01d8f3d4bfa8c0
sha1
9cf62c7758bbdc3397d991cdf54cf8c0190f1966
sha256
25b530bddc7309279730b38f57df3d45b22312fb69028002589f2d97de5744cd
sha512
32cd91e047abd1c917bb4beb918dd9f5736f4c152b12adad2161da98af4876d25dd2ccfaa8ec357da353a3da8c481c66b82cf29e2d5b2f68ab909e7293540816
ripemd-160
83b8492d29d4caa85437023eb47ad3511b79bf36
Diameter
4362439978
Circumference
13705009386.611
Area
1.4946820211755E+19
Volume
4.3469737357158E+28
Surface area
5.9787280847018E+19
Circumference
13705009386.611
Perimeter
8724879956
Area
4757720640413160121
Diagonal
3084710890.9631
Surface area
2.8546323842479E+19
Volume
1.0377635362947E+28
Space diagonal
3777983843.4328
Perimeter
6543659967
Area
2.0601534693537E+18
Altitude
1888991921.7164
Surface area
2.0601534693537E+18
Volume
1.2230160563035E+27
Height
1028236963.6544