1997661657 is an odd 10-digits composite number following 1997661656
and preceding 1997661658 . In scientific notation, it is written as 1.997661657 × 10^9.
The sum of its digits is 57. It has a total of 2 prime factors and 4 positive divisors.
There are 1331774436 positive integers (up to 1997661657) that are relatively prime to 1997661657.
1997661657 has 4 divisors, whose sum is 2663548880
The reverse of 1997661657 is 7561667991
Previous prime number is 3
Is Prime? no Number parity odd Number length 10 Sum of Digits 57 Digital Root 3
Name
one billion nine hundred ninety-seven million six hundred sixty-one thousand six hundred fifty-seven
Scientific notation
1.997661657 × 10^9
Engineering notation
1.997661657 × 10^9
Prime Factorization
3 × 665887219
Composite number
ω Distinct Factors
2 Total number of distinct prime factors
Ω Total Factors
2 Total number of prime factors
rad Radical
1997661657 Product of the distinct prime numbers
The prime factorization of 1997661657 is 3 × 665887219.
Since it has a total of 2 prime factors.
1 , 10 , 23 , 17 , 626 , 396 , 4828 , 4393 , 15038 , 29389 , 419771 , 4273 , 8453124 , 3784658 , 52434100 , 43681197 , 466094080 , 486350074 , 1115880658 , 4440481398
n×2
3995323314
n×3
5992984971
n×4
7990646628
n×5
9988308285
n÷2
998830828.5
n÷3
665887219
n÷3
499415414.25
n÷5
399532331.4
n2
3990652095847985649
n3
7.9719726783022E+27
n4
1.5925304150096E+37
n5
3.181336947671E+46
2 √n44695.208434462
3 √n1259.4298371465
4 √n211.41241315131
5 √n72.461010601704
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
-1997661656 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 1997661657 can be divided by 4 positive divisors.
The sum of these divisors (counting 1997661657) is 1, the average is 0.25.
Base
System
Value
2
Binary
1110111000100011110010111011001
3
Ternary
12011012221201121210
4
Quaternary
1313010132113121
5
Quinary
13042400133112
6
Senary
530120453333
8
Octal
16704362731
10
Decimal
1997661657
12
Duodecimal
47901a249
16
Hexadecimal
7711e5d9
20
Vigesimal
1b457e2h
36
Base36
x1ctll
md5
d8351acd7ffb3779cca06a87d6cc7d4b
sha1
9022486c44c1d52c26e6a12cd4cc2e17e4531c8d
sha256
d560ee12190165649633f030a3f79800f950eb7476e6e3b9fc54d967fc752692
sha512
f8282da4e4b42a6cc391bae1bed0cb67a2c40a0e82f1be1fccc3c7e2c4506e7bae7b25c1ff2ff09b2c66e735673489ce096f184131ea7822e53c4835ac773d49
ripemd-160
263d6c0d713ddd87d922e1bc5b8c40dc8e631380
Diameter
3995323314
Circumference
12551678371.978
Area
1.2537003307349E+19
Volume
3.3392921067697E+28
Surface area
5.0148013229395E+19
Circumference
12551678371.978
Perimeter
7990646628
Area
3990652095847985649
Diagonal
2825120208.3621
Surface area
2.3943912575088E+19
Volume
7.9719726783022E+27
Space diagonal
3460051486.2562
Perimeter
5992984971
Area
1.728003046335E+18
Altitude
1730025743.1281
Surface area
1.728003046335E+18
Volume
9.3950599004356E+26
Height
941706736.1207