538433538 has 16 divisors (see below), whose sum is σ = 1077095136. Its totient is φ = 179439840.

The previous prime is 538433479. The next prime is 538433557. The reversal of 538433538 is 835334835.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 538433538.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47445 + ... + 57687.

It is an arithmetic number, because the mean of its divisors is an integer number (67318446).

Almost surely, 2^538433538 is an apocalyptic number.

538433538 is an abundant number, since it is smaller than the sum of its proper divisors (538661598).

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

538433538 is a wasteful number, since it uses less digits than its factorization.

538433538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19009.

The product of its digits is 518400, while the sum is 42.

The square root of 538433538 is about 23204.1707026991. The cubic root of 538433538 is about 813.5371090159.

The spelling of 538433538 in words is "five hundred thirty-eight million, four hundred thirty-three thousand, five hundred thirty-eight".