1997788681 is an odd 10-digits composite number following 1997788680
and preceding 1997788682 . In scientific notation, it is written as 1.997788681 × 10^9.
The sum of its digits is 64. It has a total of 2 prime factors and 4 positive divisors.
There are 1712390292 positive integers (up to 1997788681) that are relatively prime to 1997788681.
1997788681 has 4 divisors, whose sum is 2283187072
The reverse of 1997788681 is 1868877991
Previous prime number is 7
Is Prime? no Number parity odd Number length 10 Sum of Digits 64 Digital Root 1
Name
one billion nine hundred ninety-seven million seven hundred eighty-eight thousand six hundred eighty-one
Scientific notation
1.997788681 × 10^9
Engineering notation
1.997788681 × 10^9
Prime Factorization
7 × 285398383
Composite number
ω Distinct Factors
2 Total number of distinct prime factors
Ω Total Factors
2 Total number of prime factors
rad Radical
1997788681 Product of the distinct prime numbers
The prime factorization of 1997788681 is 7 × 285398383.
Since it has a total of 2 prime factors.
9 , 3 , 90 , 83 , 179 , 586 , 1434 , 4724 , 8674 , 445 , 2590 , 956485 , 2936197 , 8279627 , 53818726 , 81434629 , 604857285 , 85367616 , 7317198307 , 5073545459
n×2
3995577362
n×3
5993366043
n×4
7991154724
n×5
9988943405
n÷2
998894340.5
n÷3
665929560.33333
n÷3
499447170.25
n÷5
399557736.2
n2
3991159613931719761
n3
7.9734935007771E+27
n4
1.592935506388E+37
n5
3.1823485242249E+46
2 √n44696.629414308
3 √n1259.4565307601
4 √n211.41577380675
5 √n72.461932084406
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
-1997788680 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 1997788681 can be divided by 4 positive divisors.
The sum of these divisors (counting 1997788681) is 1, the average is 0.25.
Base
System
Value
2
Binary
1110111000100111101011000001001
3
Ternary
12011020012011212101
4
Quaternary
1313010331120021
5
Quinary
13042413214211
6
Senary
530123313401
8
Octal
16704753011
10
Decimal
1997788681
12
Duodecimal
47907b861
16
Hexadecimal
7713d609
20
Vigesimal
1b463be1
36
Base36
x1fjm1
md5
d090d37814c159444c3cd1a483b2f836
sha1
b75975cb29646b8a2a5f507ecbbd3b568198248f
sha256
16796c7e5d73449420e615a50efcfe82d3bb4c594fba941b6d0e4e59858efebd
sha512
f760421fa0bb6abe89b1b1ac9c18faa774c0278246c84c23de21276e08e527622d06b16a325d54668a436e1f67335363b1b27efedc2a746ec4d05f3d3e9b6091
ripemd-160
999db25e7fd156328d5d3d07365ce076bd813dce
Diameter
3995577362
Circumference
12552476487.309
Area
1.2538597722432E+19
Volume
3.3399291473983E+28
Surface area
5.0154390889729E+19
Circumference
12552476487.309
Perimeter
7991154724
Area
3991159613931719761
Diagonal
2825299847.4257
Surface area
2.394695768359E+19
Volume
7.9734935007771E+27
Space diagonal
3460271498.278
Perimeter
5993366043
Area
1.7282228081117E+18
Altitude
1730135749.139
Surface area
1.7282228081117E+18
Volume
9.3968522069106E+26
Height
941766615.80855