1995 is an odd 4-digits composite number following 1994
and preceding 1996 . In scientific notation, it is written as 1.995 × 10^3.
The sum of its digits is 24. It has a total of 3 prime factors and 8 positive divisors.
There are 864 positive integers (up to 1995) that are relatively prime to 1995.
1995 has 8 divisors, whose sum is 2560
The reverse of 1995 is 5991
Previous prime number is 7
Is Prime? no
Number parity odd
Number length 4
Sum of Digits 24
Digital Root 6
Name
one thousand nine hundred ninety-five
Scientific notation
1.995 × 10^3
Engineering notation
1.995 × 10^3
Prime Factorization
15 × 7 × 19
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
1995
Product of the distinct prime numbers
The prime factorization of 1995 is 15 × 7 × 19.
Since it has a total of 3 prime factors.
9 , 3 , 16 , 88 , 161 , 583 , 1255 , 4586 , 19271 , 11406 , 931299 , 494957 , 7576501 , 8331461 , 8209320 , 40729224 , 321235280 , 563002457 , 1562202593 , 9035960858
n×2
3990
n×3
5985
n×4
7980
n×5
9975
n÷2
997.5
n÷3
665
n÷3
498.75
n÷5
399
n2
3980025
n3
7940149875
n4
15840599000625
n5
31601995006246875
2 √n
44.665422868255
3 √n
12.588702395242
4 √n
6.6832194987337
5 √n
4.5707617040526
8 divisors
τ
Total Divisors
8
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-1994
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.125
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
8
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1995 can be divided by 8 positive divisors.
The sum of these divisors (counting 1995) is 1, the average is 0.125.
Base
System
Value
2
Binary
11111001011
3
Ternary
2201220
4
Quaternary
133023
5
Quinary
30440
6
Senary
13123
8
Octal
3713
10
Decimal
1995
12
Duodecimal
11a3
16
Hexadecimal
7cb
20
Vigesimal
4jf
36
Base36
1jf
md5
3f088ebeda03513be71d34d214291986
sha1
87e8db4f2338ba69baa1c7d4e60969caf4f06d9e
sha256
e78f27ab3ef177a9926e6b90e572b9853ce6cf4d87512836e9ae85807ec9d7fe
sha512
b40ce4d0687ba919ceaacc8049fbf31121fdeab05d4508fb9da018d3eda143fb228723c9be8996599162d17c48811949ea39ab7ee5e254a3d52f508b93ce42f2
ripemd-160
99bdbb9f17598ceb5b61528e09c977daa2bf5ba0
Diameter
3990
Circumference
12534.954687823
Area
12503617.301104
Volume
33259622020.936
Surface area
50014469.204415
Circumference
12534.954687823
Perimeter
7980
Area
3980025
Diagonal
2821.3560569343
Surface area
23880150
Volume
7940149875
Space diagonal
3455.4413610999
Perimeter
5985
Area
1723401.3788486
Altitude
1727.72068055
Surface area
1723401.3788486
Volume
935755636.70834
Height
940.45201897811