538445238 has 16 divisors (see below), whose sum is σ = 1105996080. Its totient is φ = 174630816.

The previous prime is 538445213. The next prime is 538445261. The reversal of 538445238 is 832544835.

It is a self number, because there is not a number n which added to its sum of digits gives 538445238.

It is a congruent number.

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, 1212493 + ... + 1212936.

It is an arithmetic number, because the mean of its divisors is an integer number (69124755).

Almost surely, 2^538445238 is an apocalyptic number.

538445238 is an abundant number, since it is smaller than the sum of its proper divisors (567550842).

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

538445238 is a wasteful number, since it uses less digits than its factorization.

538445238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2425471.

The product of its digits is 460800, while the sum is 42.

The square root of 538445238 is about 23204.4228111798. The cubic root of 538445238 is about 813.5430016127.

The spelling of 538445238 in words is "five hundred thirty-eight million, four hundred forty-five thousand, two hundred thirty-eight".