18181114630788 has 24 divisors (see below), whose sum is σ = 42485263454592. Its totient is φ = 6051419736544.

The previous prime is 18181114630769. The next prime is 18181114630813. The reversal of 18181114630788 is 88703641118181.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1118967420 + ... + 1118983667.

It is an arithmetic number, because the mean of its divisors is an integer number (1770219310608).

Almost surely, 2^{18181114630788} is an apocalyptic number.

It is an amenable number.

18181114630788 is an abundant number, since it is smaller than the sum of its proper divisors (24304148823804).

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

18181114630788 is a wasteful number, since it uses less digits than its factorization.

18181114630788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2237951771 (or 2237951769 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 57.

The spelling of 18181114630788 in words is "eighteen trillion, one hundred eighty-one billion, one hundred fourteen million, six hundred thirty thousand, seven hundred eighty-eight".