18123263984 has 60 divisors (see below), whose sum is σ = 42629612304. Its totient is φ = 7310211072.

The previous prime is 18123263953. The next prime is 18123264007. The reversal of 18123263984 is 48936232181.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 247589 + ... + 312324.

Almost surely, 2^18123263984 is an apocalyptic number.

18123263984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18123263984 is an abundant number, since it is smaller than the sum of its proper divisors (24506348320).

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

18123263984 is a wasteful number, since it uses less digits than its factorization.

18123263984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559962 (or 559939 counting only the distinct ones).

The product of its digits is 497664, while the sum is 47.

The spelling of 18123263984 in words is "eighteen billion, one hundred twenty-three million, two hundred sixty-three thousand, nine hundred eighty-four".