538635394 has 32 divisors (see below), whose sum is σ = 897039360. Its totient is φ = 240517200.

The previous prime is 538635379. The next prime is 538635397. The reversal of 538635394 is 493536835.

It is not an unprimeable number, because it can be changed into a prime (538635397) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 654067 + ... + 654889.

It is an arithmetic number, because the mean of its divisors is an integer number (28032480).

Almost surely, 2^538635394 is an apocalyptic number.

538635394 is a deficient number, since it is larger than the sum of its proper divisors (358403966).

538635394 is a wasteful number, since it uses less digits than its factorization.

538635394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1326.

The product of its digits is 1166400, while the sum is 46.

The square root of 538635394 is about 23208.5198580177. The cubic root of 538635394 is about 813.6387599583.

The spelling of 538635394 in words is "five hundred thirty-eight million, six hundred thirty-five thousand, three hundred ninety-four".