1997136721 is an odd 10-digits composite number following 1997136720
and preceding 1997136722 . In scientific notation, it is written as 1.997136721 × 10^9.
The sum of its digits is 46. It has a total of 3 prime factors and 8 positive divisors.
There are 1879491600 positive integers (up to 1997136721) that are relatively prime to 1997136721.
1997136721 has 8 divisors, whose sum is 2116174400
The reverse of 1997136721 is 1276317991
Previous prime number is 151
Is Prime? no
Number parity odd
Number length 10
Sum of Digits 46
Digital Root 1
Name
one billion nine hundred ninety-seven million one hundred thirty-six thousand seven hundred twenty-one
Scientific notation
1.997136721 × 10^9
Engineering notation
1.997136721 × 10^9
Prime Factorization
19 × 151 × 696109
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
1997136721
Product of the distinct prime numbers
The prime factorization of 1997136721 is 19 × 151 × 696109.
Since it has a total of 3 prime factors.
7 , 2 , 46 , 54 , 584 , 525 , 2255 , 6888 , 92185 , 67279 , 646150 , 476086 , 9217263 , 9579125 , 43322425 , 79335583 , 398259244 , 25350741 , 7443429955 , 850981289
n×2
3994273442
n×3
5991410163
n×4
7988546884
n×5
9985683605
n÷2
998568360.5
n÷3
665712240.33333
n÷3
499284180.25
n÷5
399427344.2
n2
3988555082366631841
n3
7.9656898187256E+27
n4
1.5908571645073E+37
n5
3.1771592611034E+46
2 √n
44689.335651808
3 √n
1259.3195118276
4 √n
211.39852329619
5 √n
72.457202009626
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
-1997136720
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 1997136721 can be divided by 8 positive divisors.
The sum of these divisors (counting 1997136721) is 1, the average is 0.125.
Base
System
Value
2
Binary
1110111000010011110001101010001
3
Ternary
12011011222001112201
4
Quaternary
1313002132031101
5
Quinary
13042231333341
6
Senary
530101323201
8
Octal
16702361521
10
Decimal
1997136721
12
Duodecimal
478a06501
16
Hexadecimal
7709e351
20
Vigesimal
1b4221g1
36
Base36
x11kk1
md5
710c89d910bc942fde103fe24631884e
sha1
330334dc508606680d79b5dac38299c74d4550ad
sha256
275822f6b4ed92fbf8c098a0a26ec6bcaaf2af1c28dde2cc6905b704a725a827
sha512
6dc0db7a0d0a36dd9e784c41bc55c024e41cce14193ddb4c5aec2f4611849c3446353b228f2a64cf43206160f61542acf82b00e47e890fe353fa63b1894039b8
ripemd-160
2815d4adf0d9c856dcf518a6cb3668a111f087ac
Diameter
3994273442
Circumference
12548380101.816
Area
1.2530415345201E+19
Volume
3.3366603487044E+28
Surface area
5.0121661380805E+19
Circumference
12548380101.816
Perimeter
7988546884
Area
3988555082366631841
Diagonal
2824377836.7515
Surface area
2.39313304942E+19
Volume
7.9656898187256E+27
Space diagonal
3459142270.4335
Perimeter
5991410163
Area
1.7270950128615E+18
Altitude
1729571135.2168
Surface area
1.7270950128615E+18
Volume
9.3876554794158E+26
Height
941459278.91718