1986989191 is an odd 10-digits composite number following 1986989190
and preceding 1986989192 . In scientific notation, it is written as 1.986989191 × 10^9.
The sum of its digits is 61. It has a total of 2 prime factors and 4 positive divisors.
There are 1762296000 positive integers (up to 1986989191) that are relatively prime to 1986989191.
1986989191 has 4 divisors, whose sum is 1991395384
The reverse of 1986989191 is 1919896891
Previous prime number is 451
Is Prime? no
Number parity odd
Number length 10
Sum of Digits 61
Digital Root 7
Name
one billion nine hundred eighty-six million nine hundred eighty-nine thousand one hundred ninety-one
Scientific notation
1.986989191 × 10^9
Engineering notation
1.986989191 × 10^9
Prime Factorization
451 × 4405741
Composite number
ω
Distinct Factors
2
Total number of distinct prime factors
Ω
Total Factors
2
Total number of prime factors
rad
Radical
1986989191
Product of the distinct prime numbers
The prime factorization of 1986989191 is 451 × 4405741.
Since it has a total of 2 prime factors.
5 , 4 , 29 , 18 , 940 , 105 , 9269 , 5176 , 57779 , 98469 , 530247 , 438496 , 3784259 , 4897819 , 54863952 , 42316638 , 297703365 , 602064553 , 4990965457 , 2605103038
n×2
3973978382
n×3
5960967573
n×4
7947956764
n×5
9934945955
n÷2
993494595.5
n÷3
662329730.33333
n÷3
496747297.75
n÷5
397397838.2
n2
3948126045150834481
n3
7.8448837764203E+27
n4
1.5587699268398E+37
n5
3.0972589958866E+46
2 √n
44575.656932905
3 √n
1257.1830052316
4 √n
211.12947907127
5 √n
72.383420324814
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
-1986989190
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 1986989191 can be divided by 4 positive divisors.
The sum of these divisors (counting 1986989191) is 1, the average is 0.25.
Base
System
Value
2
Binary
1110110011011110000110010000111
3
Ternary
12010110212111202021
4
Quaternary
1312123300302013
5
Quinary
13032132123231
6
Senary
525100024011
8
Octal
16633606207
10
Decimal
1986989191
12
Duodecimal
475532007
16
Hexadecimal
766f0c87
20
Vigesimal
1b0idcjb
36
Base36
wv02o7
md5
de7fa7acc2345a565f56e0dbd1391ecd
sha1
757add970b40ec1012b0447955cf402381222979
sha256
3aa8e0f427aefe6f3793b00f689fe4f65d38c6d41556b0fd2a16b19d7fc12e7f
sha512
7976dd1ed38ac0f200ce4819249375026cf8156d9c7b89d51c235bdb1d03fa4db4811236e71a8ad46bf9e90f1d6ef1364d71043a47fdb56d8aca92173d02a250
ripemd-160
9b1fe6560310d1bd4595e7890e3528b136426b85
Diameter
3973978382
Circumference
12484621290.416
Area
1.2403403778892E+19
Volume
3.2860572320357E+28
Surface area
4.961361511557E+19
Circumference
12484621290.416
Perimeter
7947956764
Area
3948126045150834481
Diagonal
2810027062.2009
Surface area
2.3688756270905E+19
Volume
7.8448837764203E+27
Space diagonal
3441566232.9022
Perimeter
5960967573
Area
1.7095887262218E+18
Altitude
1720783116.4511
Surface area
1.7095887262218E+18
Volume
9.2452841932119E+26
Height
936675687.40031