538861878 has 12 divisors (see below), whose sum is σ = 1167534108. Its totient is φ = 179620620.

The previous prime is 538861877. The next prime is 538861931. The reversal of 538861878 is 878168835.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538861877) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14968368 + ... + 14968403.

It is an arithmetic number, because the mean of its divisors is an integer number (97294509).

Almost surely, 2^538861878 is an apocalyptic number.

538861878 is an abundant number, since it is smaller than the sum of its proper divisors (628672230).

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

538861878 is a wasteful number, since it uses less digits than its factorization.

538861878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29936779 (or 29936776 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The square root of 538861878 is about 23213.3986740417. The cubic root of 538861878 is about 813.7527828768.

The spelling of 538861878 in words is "five hundred thirty-eight million, eight hundred sixty-one thousand, eight hundred seventy-eight".