538615407 has 24 divisors (see below), whose sum is σ = 794305792. Its totient is φ = 324395280.

The previous prime is 538615391. The next prime is 538615411. The reversal of 538615407 is 704516835.

538615407 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 538615407 - 2⁴ = 538615391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538615487) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 54618 + ... + 63720.

Almost surely, 2^538615407 is an apocalyptic number.

538615407 is a deficient number, since it is larger than the sum of its proper divisors (255690385).

538615407 is a wasteful number, since it uses less digits than its factorization.

538615407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9291 (or 9280 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 39.

The square root of 538615407 is about 23208.0892578428. The cubic root of 538615407 is about 813.6286960082.

The spelling of 538615407 in words is "five hundred thirty-eight million, six hundred fifteen thousand, four hundred seven".