18233800188 has 12 divisors (see below), whose sum is σ = 42545533800. Its totient is φ = 6077933392.

The previous prime is 18233800187. The next prime is 18233800219. The reversal of 18233800188 is 88100833281.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18233800187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 759741663 + ... + 759741686.

It is an arithmetic number, because the mean of its divisors is an integer number (3545461150).

Almost surely, 2^18233800188 is an apocalyptic number.

It is an amenable number.

18233800188 is an abundant number, since it is smaller than the sum of its proper divisors (24311733612).

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

18233800188 is a wasteful number, since it uses less digits than its factorization.

18233800188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1519483356 (or 1519483354 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 42.

The spelling of 18233800188 in words is "eighteen billion, two hundred thirty-three million, eight hundred thousand, one hundred eighty-eight".