201809 is an odd 6-digits prime number following 201808
and preceding 201810 . In scientific notation, it is written as 2.01809 × 10^5.
The sum of its digits is 20. It has a total of 1 prime factors and 2 positive divisors.
There are 201808 positive integers (up to 201809) that are relatively prime to 201809.
201809 has 2 divisors, whose sum is 201810
The reverse of 201809 is 908102
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 6
Sum of Digits 20
Digital Root 2
Name
two hundred one thousand eight hundred nine
Scientific notation
2.01809 × 10^5
Engineering notation
2.01809 × 10^3
Prime Factorization
201809
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
201809
Product of the distinct prime numbers
The prime factorization of 201809 is 201809.
Since it has a total of 1 prime factors.
5 , 10 , 85 , 44 , 900 , 105 , 6858 , 9808 , 51287 , 21004 , 153177 , 467929 , 179535 , 6739084 , 94110751 , 80448047 , 223678297 , 316062819 , 9022537546 , 4229256571
n×2
403618
n×3
605427
n×4
807236
n×5
1009045
n÷2
100904.5
n÷3
67269.666666667
n÷3
50452.25
n÷5
40361.8
n2
40726872481
n3
8219049408518129
n4
1.6586781420836E+21
n5
3.3473617717576E+26
2 √n
449.23156612153
3 √n
58.656144089575
4 √n
21.195083536555
5 √n
11.507688726788
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
201810
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
100905
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
449.23267913187
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999900896883
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 201809 can be divided by 2 positive divisors.
The sum of these divisors (counting 201809) is 201810, the average is 100905.
Base
System
Value
2
Binary
110001010001010001
3
Ternary
101020211102
4
Quaternary
301101101
5
Quinary
22424214
6
Senary
4154145
8
Octal
612121
10
Decimal
201809
12
Duodecimal
98955
16
Hexadecimal
31451
20
Vigesimal
154a9
36
Base36
4bpt
md5
354a176d8b5a41d499a1b92291815083
sha1
be7f44720b4b17950f2776f230a31857371aa7f4
sha256
cb82ad7cddc5d752e50d644e30ad1d8cdcc4eca52b3d9e2c0aa76801458e9b79
sha512
f3506a43f3c68614cef9f585266bccc563d42496045c2f69113e9e7ccd94b9f8c88d56c0fec64b8fed8153df259af0a115273ff822ebeefd970261e70c873e0d
ripemd-160
64b1ef253cd9310bafbf07eabd68acc7edc1ced9
Diameter
403618
Circumference
1268003.3436566
Area
127947243390
Volume
3.4427873655056E+16
Surface area
511788973559.99
Circumference
1268003.3436566
Perimeter
807236
Area
40726872481
Diagonal
285401.02480895
Surface area
244361234886
Volume
8219049408518129
Space diagonal
349543.44142467
Perimeter
605427
Area
17635253092.618
Altitude
174771.72071233
Surface area
17635253092.618
Volume
9.6862426194508E+14
Height
95133.674936317