538078065 has 24 divisors (see below), whose sum is σ = 1001485440. Its totient is φ = 245978208.

The previous prime is 538078039. The next prime is 538078097. The reversal of 538078065 is 560870835.

It is not a de Polignac number, because 538078065 - 2¹⁶ = 538012529 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 365305 + ... + 366774.

It is an arithmetic number, because the mean of its divisors is an integer number (41728560).

Almost surely, 2^538078065 is an apocalyptic number.

It is an amenable number.

538078065 is a deficient number, since it is larger than the sum of its proper divisors (463407375).

538078065 is a wasteful number, since it uses less digits than its factorization.

538078065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732101 (or 732094 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 42.

The square root of 538078065 is about 23196.5097590133. The cubic root of 538078065 is about 813.3580376167.

The spelling of 538078065 in words is "five hundred thirty-eight million, seventy-eight thousand, sixty-five".