218304038383938 has 48 divisors (see below), whose sum is σ = 513386924983296. Its totient is φ = 66641571974880.

The previous prime is 218304038383931. The next prime is 218304038384011. The reversal of 218304038383938 is 839383830403812.

218304038383938 is a `hidden beast` number, since 2 + 18 + 30 + 403 + 83 + 83 + 9 + 38 = 666.

It is not an unprimeable number, because it can be changed into a prime (218304038383931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3672896428 + ... + 3672955863.

It is an arithmetic number, because the mean of its divisors is an integer number (10695560937152).

Almost surely, 2^{218304038383938} is an apocalyptic number.

218304038383938 is an abundant number, since it is smaller than the sum of its proper divisors (295082886599358).

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

218304038383938 is a wasteful number, since it uses less digits than its factorization.

218304038383938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7345852439 (or 7345852436 counting only the distinct ones).

The product of its (nonzero) digits is 71663616, while the sum is 63.

The spelling of 218304038383938 in words is "two hundred eighteen trillion, three hundred four billion, thirty-eight million, three hundred eighty-three thousand, nine hundred thirty-eight".