18868484428542 has 96 divisors (see below), whose sum is σ = 49182553056000. Its totient is φ = 5107098916224.

The previous prime is 18868484428501. The next prime is 18868484428543. The reversal of 18868484428542 is 24582448486881.

18868484428542 is a `hidden beast` number, since 1 + 8 + 8 + 6 + 84 + 84 + 428 + 5 + 42 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18868484428543) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 90046209 + ... + 90255507.

It is an arithmetic number, because the mean of its divisors is an integer number (512318261000).

Almost surely, 2^{18868484428542} is an apocalyptic number.

18868484428542 is an abundant number, since it is smaller than the sum of its proper divisors (30314068627458).

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

18868484428542 is a wasteful number, since it uses less digits than its factorization.

18868484428542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246990 (or 246987 counting only the distinct ones).

The product of its digits is 1006632960, while the sum is 72.

The spelling of 18868484428542 in words is "eighteen trillion, eight hundred sixty-eight billion, four hundred eighty-four million, four hundred twenty-eight thousand, five hundred forty-two".