130968639 has 12 divisors (see below), whose sum is σ = 189490600. Its totient is φ = 87167664.

The previous prime is 130968599. The next prime is 130968661. The reversal of 130968639 is 936869031.

130968639 is a `hidden beast` number, since 1 + 3 + 0 + 9 + 6 + 8 + 639 = 666.

It is not a de Polignac number, because 130968639 - 2¹³ = 130960447 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 130968594 and 130968603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130968689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6184 + ... + 17325.

Almost surely, 2^130968639 is an apocalyptic number.

130968639 is a deficient number, since it is larger than the sum of its proper divisors (58521961).

130968639 is a wasteful number, since it uses less digits than its factorization.

130968639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24134 (or 24131 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 130968639 is about 11444.1530486096. The cubic root of 130968639 is about 507.8347766461.

The spelling of 130968639 in words is "one hundred thirty million, nine hundred sixty-eight thousand, six hundred thirty-nine".