538331886 has 32 divisors (see below), whose sum is σ = 1225476000. Its totient is φ = 175066560.

The previous prime is 538331863. The next prime is 538331891. The reversal of 538331886 is 688133835.

538331886 is a `hidden beast` number, since 538 + 3 + 31 + 8 + 86 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119361 + ... + 123788.

It is an arithmetic number, because the mean of its divisors is an integer number (38296125).

Almost surely, 2^538331886 is an apocalyptic number.

538331886 is an abundant number, since it is smaller than the sum of its proper divisors (687144114).

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

538331886 is a wasteful number, since it uses less digits than its factorization.

538331886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243201 (or 243195 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 538331886 is about 23201.9802172142. The cubic root of 538331886 is about 813.4859093332.

The spelling of 538331886 in words is "five hundred thirty-eight million, three hundred thirty-one thousand, eight hundred eighty-six".