1661568121 is an odd 10-digits prime number following 1661568120
and preceding 1661568122 . In scientific notation, it is written as 1.661568121 × 10^9.
The sum of its digits is 37. It has a total of 1 prime factors and 2 positive divisors.
There are 1661568120 positive integers (up to 1661568121) that are relatively prime to 1661568121.
1661568121 has 2 divisors, whose sum is 1661568122
The reverse of 1661568121 is 1218651661
Previous prime number is 1
Is Prime? yes
Number parity odd
Number length 10
Sum of Digits 37
Digital Root 1
Name
one billion six hundred sixty-one million five hundred sixty-eight thousand one hundred twenty-one
Scientific notation
1.661568121 × 10^9
Engineering notation
1.661568121 × 10^9
Prime Factorization
1661568121
Composite number
ω
Distinct Factors
1
Total number of distinct prime factors
Ω
Total Factors
1
Total number of prime factors
rad
Radical
1661568121
Product of the distinct prime numbers
The prime factorization of 1661568121 is 1661568121.
Since it has a total of 1 prime factors.
7 , 10 , 81 , 87 , 80 , 560 , 7700 , 3024 , 40656 , 60553 , 485350 , 835370 , 7458358 , 2459298 , 28500311 , 24677596 , 378213958 , 921067335 , 6197441730 , 29653775
n×2
3323136242
n×3
4984704363
n×4
6646272484
n×5
8307840605
n÷2
830784060.5
n÷3
553856040.33333
n÷3
415392030.25
n÷5
332313624.2
n2
2760808620723470641
n3
4.5872715923761E+27
n4
7.622064240261E+36
n5
1.2664578957832E+46
2 √n
40762.337040459
3 √n
1184.4208677071
4 √n
201.89684752482
5 √n
69.839903438735
2 divisors
τ
Total Divisors
2
Total number of the positive divisors of n
σ
Sum of Divisors
1661568122
Sum of all the positive divisors of n
s
Aliquot Sum
1
Sum of the proper positive divisors of n
A
Arithmetic Mean
830784061
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
40762.337052726
Returns the nth root of the product of n divisors
H
Harmonic Mean
1.9999999987963
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1661568121 can be divided by 2 positive divisors.
The sum of these divisors (counting 1661568121) is 1661568122, the average is 830784061.
Base
System
Value
2
Binary
1100011000010011000010001111001
3
Ternary
11021210112101222001
4
Quaternary
1203002120101321
5
Quinary
11400330134441
6
Senary
432513101001
8
Octal
14302302171
10
Decimal
1661568121
12
Duodecimal
3a4557761
16
Hexadecimal
63098479
20
Vigesimal
15j4g061
36
Base36
rh9661
md5
210b24fcd19707e2ac4faf6738b18781
sha1
f9f665baf7e459b7693ace105db6eb5758769fc2
sha256
9dfe0a5f8d365c0367319771b69b7b332636b666af8fbbdeb59a9eca2e72f01f
sha512
afd1af0110f0c3103322e7d1877c3fb3e18b656e7f5972e02efeab826dd9acf58a0790f99aad5d81037eef187c4b1ad3a477b479dfd32e7187ec80999fba3825
ripemd-160
db7ccc6526d13b80bb9527a62275ff7a082d160d
Diameter
3323136242
Circumference
10439940404.745
Area
8.6733360808322E+18
Volume
1.921511831284E+28
Surface area
3.4693344323329E+19
Circumference
10439940404.745
Perimeter
6646272484
Area
2760808620723470641
Diagonal
2349812171.525
Surface area
1.6564851724341E+19
Volume
4.5872715923761E+27
Space diagonal
2877920405.8088
Perimeter
4984704363
Area
1.1954652002668E+18
Altitude
1438960202.9044
Surface area
1.1954652002668E+18
Volume
5.4061514168559E+26
Height
783270723.84166