18338797888 has 28 divisors (see below), whose sum is σ = 36903611232. Its totient is φ = 9040250240.

The previous prime is 18338797849. The next prime is 18338797907. The reversal of 18338797888 is 88879783381.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2013370 + ... + 2022457.

Almost surely, 2^18338797888 is an apocalyptic number.

It is an amenable number.

18338797888 is an abundant number, since it is smaller than the sum of its proper divisors (18564813344).

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

18338797888 is an equidigital number, since it uses as much as digits as its factorization.

18338797888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4035910 (or 4035900 counting only the distinct ones).

The product of its digits is 130056192, while the sum is 70.

The spelling of 18338797888 in words is "eighteen billion, three hundred thirty-eight million, seven hundred ninety-seven thousand, eight hundred eighty-eight".