130995639 has 24 divisors (see below), whose sum is σ = 198525600. Its totient is φ = 83119680.

The previous prime is 130995637. The next prime is 130995643. The reversal of 130995639 is 936599031.

130995639 is a `hidden beast` number, since 1 + 3 + 0 + 9 + 9 + 5 + 639 = 666.

It is not a de Polignac number, because 130995639 - 2¹ = 130995637 is a prime.

It is a super-3 number, since 3×130995639³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 130995594 and 130995603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130995637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14997 + ... + 22065.

It is an arithmetic number, because the mean of its divisors is an integer number (8271900).

Almost surely, 2^130995639 is an apocalyptic number.

130995639 is a deficient number, since it is larger than the sum of its proper divisors (67529961).

130995639 is a wasteful number, since it uses less digits than its factorization.

130995639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7175 (or 7172 counting only the distinct ones).

The product of its (nonzero) digits is 196830, while the sum is 45.

The square root of 130995639 is about 11445.3326295045. The cubic root of 130995639 is about 507.8696720148.

The spelling of 130995639 in words is "one hundred thirty million, nine hundred ninety-five thousand, six hundred thirty-nine".