538532638 has 16 divisors (see below), whose sum is σ = 942040800. Its totient is φ = 230799408.

The previous prime is 538532633. The next prime is 538532641. The reversal of 538532638 is 836235835.

It is a junction number, because it is equal to n+sod(n) for n = 538532594 and 538532603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538532633) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 391831 + ... + 393202.

It is an arithmetic number, because the mean of its divisors is an integer number (58877550).

Almost surely, 2^538532638 is an apocalyptic number.

538532638 is a deficient number, since it is larger than the sum of its proper divisors (403508162).

538532638 is an equidigital number, since it uses as much as digits as its factorization.

538532638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785056 (or 785042 counting only the distinct ones).

The product of its digits is 518400, while the sum is 43.

The square root of 538532638 is about 23206.3059964312. The cubic root of 538532638 is about 813.5870171142.

The spelling of 538532638 in words is "five hundred thirty-eight million, five hundred thirty-two thousand, six hundred thirty-eight".