130388018 has 4 divisors (see below), whose sum is σ = 195582030. Its totient is φ = 65194008.

The previous prime is 130387993. The next prime is 130388023. The reversal of 130388018 is 810883031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 110523169 + 19864849 = 10513^2 + 4457^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32597003 + ... + 32597006.

Almost surely, 2^130388018 is an apocalyptic number.

130388018 is a deficient number, since it is larger than the sum of its proper divisors (65194012).

130388018 is an equidigital number, since it uses as much as digits as its factorization.

130388018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65194011.

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 130388018 is about 11418.7572879013. The cubic root of 130388018 is about 507.0832065340.

The spelling of 130388018 in words is "one hundred thirty million, three hundred eighty-eight thousand, eighteen".