18388343224 has 32 divisors (see below), whose sum is σ = 34718814000. Its totient is φ = 9130205952.

The previous prime is 18388343219. The next prime is 18388343231. The reversal of 18388343224 is 42234388381.

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, 693442 + ... + 719470.

Almost surely, 2^18388343224 is an apocalyptic number.

It is an amenable number.

18388343224 is a deficient number, since it is larger than the sum of its proper divisors (16330470776).

18388343224 is a wasteful number, since it uses less digits than its factorization.

18388343224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26647 (or 26643 counting only the distinct ones).

The product of its digits is 884736, while the sum is 46.

The spelling of 18388343224 in words is "eighteen billion, three hundred eighty-eight million, three hundred forty-three thousand, two hundred twenty-four".