1081 is an odd 4-digits composite number following 1080
and preceding 1082 . In scientific notation, it is written as 1.081 × 10^3.
The sum of its digits is 10. It has a total of 2 prime factors and 4 positive divisors.
There are 1012 positive integers (up to 1081) that are relatively prime to 1081.
1081 has 4 divisors, whose sum is 1152
The reverse of 1081 is 1801
Previous prime number is 23
Is Prime? no
Number parity odd
Number length 4
Sum of Digits 10
Digital Root 1
Name
one thousand eighty-one
Scientific notation
1.081 × 10^3
Engineering notation
1.081 × 10^3
Prime Factorization
23 × 47
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
1081
Product of the distinct prime numbers
The prime factorization of 1081 is 23 × 47.
Since it has a total of 2 prime factors.
2 , 9 , 35 , 21 , 558 , 550 , 1206 , 4755 , 39046 , 6502 , 784156 , 850557 , 8280740 , 6406379 , 21433156 , 1560411 , 821548847 , 100220577 , 9263211995 , 4498287426
n×2
2162
n×3
3243
n×4
4324
n×5
5405
n÷2
540.5
n÷3
360.33333333333
n÷3
270.25
n÷5
216.2
n2
1168561
n3
1263214441
n4
1365534810721
n5
1476143130389401
2 √n
32.878564445547
3 √n
10.263021325334
4 √n
5.7339832965877
5 √n
4.0435716109144
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
-1080
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 1081 can be divided by 4 positive divisors.
The sum of these divisors (counting 1081) is 1, the average is 0.25.
Base
System
Value
2
Binary
10000111001
3
Ternary
1111001
4
Quaternary
100321
5
Quinary
13311
6
Senary
5001
8
Octal
2071
10
Decimal
1081
12
Duodecimal
761
16
Hexadecimal
439
20
Vigesimal
2e1
36
Base36
u1
md5
36a16a2505369e0c922b6ea7a23a56d2
sha1
a874f83e95a94266c7d2856a7cbb42ee5af2e01a
sha256
e18037f42fd038fa9b51c6234fa4f332fa681c14653c9852fdf9a0a501bbac24
sha512
1de7c051f3cfc55fa2ba09249715196822e5954da8b278a183caa618ca37deb2c5aee03f05f97f00e3e582583c8abc4393670c8237283f083039dafb11becb9f
ripemd-160
ad6a295b4c0ab6ad956e95be21c8d9d16a595905
Diameter
2162
Circumference
6792.1233170611
Area
3671142.6528715
Volume
5291340277.0055
Surface area
14684570.611486
Circumference
6792.1233170611
Perimeter
4324
Area
1168561
Diagonal
1528.7648609253
Surface area
7011366
Volume
1263214441
Space diagonal
1872.346922982
Perimeter
3243
Area
506001.75593587
Altitude
936.17346149098
Surface area
506001.75593587
Volume
148871249.55398
Height
509.58828697511