938638285 has 32 divisors (see below), whose sum is σ = 1292376960. Its totient is φ = 648684288.

The previous prime is 938638277. The next prime is 938638291. The reversal of 938638285 is 582836839.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 938638285 - 2³ = 938638277 is a prime.

It is a Smith number, since the sum of its digits (52) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 97927 + ... + 107083.

It is an arithmetic number, because the mean of its divisors is an integer number (40386780).

Almost surely, 2^938638285 is an apocalyptic number.

938638285 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

938638285 is a deficient number, since it is larger than the sum of its proper divisors (353738675).

938638285 is a wasteful number, since it uses less digits than its factorization.

938638285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9277.

The product of its digits is 2488320, while the sum is 52.

The square root of 938638285 is about 30637.2042621385. The cubic root of 938638285 is about 979.1128598731.

The spelling of 938638285 in words is "nine hundred thirty-eight million, six hundred thirty-eight thousand, two hundred eighty-five".