130936639 has 2 divisors, whose sum is σ = 130936640. Its totient is φ = 130936638.

The previous prime is 130936621. The next prime is 130936679. The reversal of 130936639 is 936639031.

It is a happy number.

It is an a-pointer prime, because the next prime (130936679) can be obtained adding 130936639 to its sum of digits (40).

It is a weak prime.

It is an emirp because it is prime and its reverse (936639031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 130936639 - 2¹¹ = 130934591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (130936679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65468319 + 65468320.

It is an arithmetic number, because the mean of its divisors is an integer number (65468320).

Almost surely, 2^130936639 is an apocalyptic number.

130936639 is a deficient number, since it is larger than the sum of its proper divisors (1).

130936639 is an equidigital number, since it uses as much as digits as its factorization.

130936639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78732, while the sum is 40.

The square root of 130936639 is about 11442.7548693486. The cubic root of 130936639 is about 507.7934129612.

The spelling of 130936639 in words is "one hundred thirty million, nine hundred thirty-six thousand, six hundred thirty-nine".