1661520391 is an odd 10-digits composite number following 1661520390
and preceding 1661520392 . In scientific notation, it is written as 1.661520391 × 10^9.
The sum of its digits is 34. It has a total of 3 prime factors and 8 positive divisors.
There are 1588634520 positive integers (up to 1661520391) that are relatively prime to 1661520391.
1661520391 has 8 divisors, whose sum is 1734465024
The reverse of 1661520391 is 1930251661
Previous prime number is 2711
Is Prime? no Number parity odd Number length 10 Sum of Digits 34 Digital Root 7
Name
one billion six hundred sixty-one million five hundred twenty thousand three hundred ninety-one
Scientific notation
1.661520391 × 10^9
Engineering notation
1.661520391 × 10^9
Prime Factorization
23 × 2711 × 26647
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
1661520391 Product of the distinct prime numbers
The prime factorization of 1661520391 is 23 × 2711 × 26647.
Since it has a total of 3 prime factors.
4 , 6 , 58 , 23 , 207 , 813 , 7485 , 638 , 29106 , 58862 , 535692 , 567073 , 382688 , 8450400 , 80736004 , 60897595 , 805706588 , 637385066 , 5137723283 , 9097658891
n×2
3323040782
n×3
4984561173
n×4
6646081564
n×5
8307601955
n÷2
830760195.5
n÷3
553840130.33333
n÷3
415380097.75
n÷5
332304078.2
n2
2760650009708792881
n3
4.5868762835455E+27
n4
7.6211884761052E+36
n5
1.2662760056703E+46
2 √n40761.751569333
3 √n1184.4095264228
4 √n201.89539759324
5 √n69.839502191642
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
-1661520390 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 1661520391 can be divided by 8 positive divisors.
The sum of these divisors (counting 1661520391) is 1, the average is 0.125.
Base
System
Value
2
Binary
1100011000010001100101000000111
3
Ternary
11021210102222111021
4
Quaternary
1203002030220013
5
Quinary
11400322123031
6
Senary
432512052011
8
Octal
14302145007
10
Decimal
1661520391
12
Duodecimal
3a4534007
16
Hexadecimal
6308ca07
20
Vigesimal
15j4a0jb
36
Base36
rh85c7
md5
1ed66dfa00383030dbbd1f45f0bd15ce
sha1
0aa3082e8da8941e1e9680f2f4f812e8498a868c
sha256
d60b0781c0a97c978c2d28bd2ec0dfade5eae34a93b6ae09d1f67778facfdc91
sha512
4721f36d3a77f59ec0febc648f93b2af59cfeaa53faf9757be7d02ebdcd15eceec2198df177826324ad8c769e3af6e02ee05128b94a87d45db31394c1e8cff33
ripemd-160
60f7bc9b6f7711f56aefab6632b2df39a8fa2cdd
Diameter
3323040782
Circumference
10439640508.31
Area
8.6728377896337E+18
Volume
1.9213462447082E+28
Surface area
3.4691351158535E+19
Circumference
10439640508.31
Perimeter
6646081564
Area
2760650009708792881
Diagonal
2349744671.1116
Surface area
1.6563900058253E+19
Volume
4.5868762835455E+27
Space diagonal
2877837735.0237
Perimeter
4984561173
Area
1.1953965196828E+18
Altitude
1438918867.5119
Surface area
1.1953965196828E+18
Volume
5.4056855409313E+26
Height
783248223.70388