130638737 has 4 divisors (see below), whose sum is σ = 137514480. Its totient is φ = 123762996.

The previous prime is 130638731. The next prime is 130638757. The reversal of 130638737 is 737836031.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 130638737 - 2⁴ = 130638721 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 130638737.

It is not an unprimeable number, because it can be changed into a prime (130638731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3437843 + ... + 3437880.

It is an arithmetic number, because the mean of its divisors is an integer number (34378620).

Almost surely, 2^130638737 is an apocalyptic number.

It is an amenable number.

130638737 is a deficient number, since it is larger than the sum of its proper divisors (6875743).

130638737 is an equidigital number, since it uses as much as digits as its factorization.

130638737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6875742.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 130638737 is about 11429.7303992701. The cubic root of 130638737 is about 507.4080165258.

The spelling of 130638737 in words is "one hundred thirty million, six hundred thirty-eight thousand, seven hundred thirty-seven".