538818684 has 12 divisors (see below), whose sum is σ = 1257243624. Its totient is φ = 179606224.

The previous prime is 538818661. The next prime is 538818713. The reversal of 538818684 is 486818835.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22450767 + ... + 22450790.

It is an arithmetic number, because the mean of its divisors is an integer number (104770302).

Almost surely, 2^538818684 is an apocalyptic number.

It is an amenable number.

538818684 is an abundant number, since it is smaller than the sum of its proper divisors (718424940).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

538818684 is a wasteful number, since it uses less digits than its factorization.

538818684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44901564 (or 44901562 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 51.

The square root of 538818684 is about 23212.4682875389. The cubic root of 538818684 is about 813.7310394095.

The spelling of 538818684 in words is "five hundred thirty-eight million, eight hundred eighteen thousand, six hundred eighty-four".