1091 is an odd 4-digits prime number following 1090
and preceding 1092 . In scientific notation, it is written as 1.091 × 10^3.
The sum of its digits is 11. It has a total of 1 prime factors and 2 positive divisors.
There are 1090 positive integers (up to 1091) that are relatively prime to 1091.
1091 has 2 divisors, whose sum is 1092
The reverse of 1091 is 1901
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 4
Sum of Digits 11
Digital Root 2
Name
one thousand ninety-one
Scientific notation
1.091 × 10^3
Engineering notation
1.091 × 10^3
Prime Factorization
1091
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
1091
Product of the distinct prime numbers
The prime factorization of 1091 is 1091.
Since it has a total of 1 prime factors.
7 , 2 , 32 , 19 , 883 , 862 , 9784 , 6041 , 3010 , 49323 , 314134 , 975371 , 5775422 , 5740409 , 45130848 , 59588860 , 58612533 , 583033161 , 3003015917 , 9191508010
n×2
2182
n×3
3273
n×4
4364
n×5
5455
n÷2
545.5
n÷3
363.66666666667
n÷3
272.75
n÷5
218.2
n2
1190281
n3
1298596571
n4
1416768858961
n5
1545694825126451
2 √n
33.030289129827
3 √n
10.29457092842
4 √n
5.7471983722356
5 √n
4.0510252497432
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
1092
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
546
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
33.045423283717
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9981684981685
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1091 can be divided by 2 positive divisors.
The sum of these divisors (counting 1091) is 1092, the average is 546.
Base
System
Value
2
Binary
10001000011
3
Ternary
1111102
4
Quaternary
101003
5
Quinary
13331
6
Senary
5015
8
Octal
2103
10
Decimal
1091
12
Duodecimal
76b
16
Hexadecimal
443
20
Vigesimal
2eb
36
Base36
ub
md5
754dda4b1ba34c6fa89716b85d68532b
sha1
789ef3d6e1196152c1e7ccadc639c306254a305e
sha256
11bde34a6593b3da0d81a8a71b24dc6f6cf05d18e9f59e610e58ff202263adef
sha512
a50e014f54d495dfef989ea2af05918ea312d420202e7629fe2f0e03c63ea60f072473147b8083a590fac0fa7027d97313108cedd3d43b558eb1d2cb084ed513
ripemd-160
9fbd707750e92db0a42e1026e6235e17fb057c7f
Diameter
2182
Circumference
6854.9551701329
Area
3739378.0453075
Volume
5439548596.574
Surface area
14957512.18123
Circumference
6854.9551701329
Perimeter
4364
Area
1190281
Diagonal
1542.906996549
Surface area
7141686
Volume
1298596571
Space diagonal
1889.6674310576
Perimeter
3273
Area
515406.79182097
Altitude
944.83371552882
Surface area
515406.79182097
Volume
153041073.56328
Height
514.30233218302