1985686987 is an odd 10-digits prime number following 1985686986
and preceding 1985686988 . In scientific notation, it is written as 1.985686987 × 10^9.
The sum of its digits is 67. It has a total of 1 prime factors and 2 positive divisors.
There are 1985686986 positive integers (up to 1985686987) that are relatively prime to 1985686987.
1985686987 has 2 divisors, whose sum is 1985686988
The reverse of 1985686987 is 7896865891
Previous prime number is 1
Is Prime? yes Number parity odd Number length 10 Sum of Digits 67 Digital Root 4
Name
one billion nine hundred eighty-five million six hundred eighty-six thousand nine hundred eighty-seven
Scientific notation
1.985686987 × 10^9
Engineering notation
1.985686987 × 10^9
Prime Factorization
1985686987
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
1985686987 Product of the distinct prime numbers
The prime factorization of 1985686987 is 1985686987.
Since it has a total of 1 prime factors.
7 , 3 , 14 , 14 , 274 , 67 , 4142 , 4716 , 2303 , 77685 , 905583 , 240028 , 8653113 , 8752668 , 47129210 , 50337992 , 805248272 , 761251040 , 3186752561 , 2659632508
n×2
3971373974
n×3
5957060961
n×4
7942747948
n×5
9928434935
n÷2
992843493.5
n÷3
661895662.33333
n÷3
496421746.75
n÷5
397137397.4
n2
3942952810341138169
n3
7.8294700858495E+27
n4
1.5546876864577E+37
n5
3.0871231078482E+46
2 √n44561.047866943
3 √n1256.9083071254
4 √n211.0948788269
5 √n72.373930318628
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
1985686988 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
992843494 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
44561.047878164 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999989928 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1985686987 can be divided by 2 positive divisors.
The sum of these divisors (counting 1985686987) is 1985686988, the average is 992843494.
Base
System
Value
2
Binary
1110110010110110010110111001011
3
Ternary
12010101102100110111
4
Quaternary
1312112302313023
5
Quinary
13031313440422
6
Senary
525012055151
8
Octal
16626626713
10
Decimal
1985686987
12
Duodecimal
4750044b7
16
Hexadecimal
765b2dcb
20
Vigesimal
1b0aah97
36
Base36
wu85vv
md5
a955033e62bc804104bbd6c84c0755cf
sha1
2087624beeaa03099180fd43b8de6c55b3ae58bb
sha256
5d02d2a6a38d8327b1a0a9dc58f5776d728f6cfe088a01af3b2cae47f1c0018f
sha512
f5d09192efa456c511bfd014478c23c55cf6a56ca334cd580fff25613f62688715dce006ccb8bbcc9fa6492da2c5b5a2754d6d4ebe4531bbdcd6a54c1c856be1
ripemd-160
7ad9292f473d45b3a9cf77b2ffbcda10d65b6376
Diameter
3971373974
Circumference
12476439301.376
Area
1.2387151582419E+19
Volume
3.2796007604274E+28
Surface area
4.9548606329676E+19
Circumference
12476439301.376
Perimeter
7942747948
Area
3942952810341138169
Diagonal
2808185467.6432
Surface area
2.3657716862047E+19
Volume
7.8294700858495E+27
Space diagonal
3439310749.4124
Perimeter
5957060961
Area
1.7073486498393E+18
Altitude
1719655374.7062
Surface area
1.7073486498393E+18
Volume
9.227118984669E+26
Height
936061822.54772