18868834998 has 48 divisors (see below), whose sum is σ = 44522019360. Its totient is φ = 5740555392.

The previous prime is 18868834991. The next prime is 18868835023. The reversal of 18868834998 is 89943886881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18868834991) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 432186 + ... + 473837.

It is an arithmetic number, because the mean of its divisors is an integer number (927542070).

Almost surely, 2^18868834998 is an apocalyptic number.

18868834998 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18868834998 is an abundant number, since it is smaller than the sum of its proper divisors (25653184362).

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

18868834998 is a wasteful number, since it uses less digits than its factorization.

18868834998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 906133 (or 906130 counting only the distinct ones).

The product of its digits is 191102976, while the sum is 72.

The spelling of 18868834998 in words is "eighteen billion, eight hundred sixty-eight million, eight hundred thirty-four thousand, nine hundred ninety-eight".