130438657 has 4 divisors (see below), whose sum is σ = 130630320. Its totient is φ = 130246996.

The previous prime is 130438643. The next prime is 130438661. The reversal of 130438657 is 756834031.

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 130438657 - 2¹⁵ = 130405889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130438057) 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, 94807 + ... + 96172.

It is an arithmetic number, because the mean of its divisors is an integer number (32657580).

Almost surely, 2^130438657 is an apocalyptic number.

It is an amenable number.

130438657 is a deficient number, since it is larger than the sum of its proper divisors (191663).

130438657 is an equidigital number, since it uses as much as digits as its factorization.

130438657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191662.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 130438657 is about 11420.9744330333. The cubic root of 130438657 is about 507.1488436055.

The spelling of 130438657 in words is "one hundred thirty million, four hundred thirty-eight thousand, six hundred fifty-seven".