18733794018 has 16 divisors (see below), whose sum is σ = 37482271680. Its totient is φ = 6242150736.

The previous prime is 18733794017. The next prime is 18733794019. The reversal of 18733794018 is 81049733781.

It is an interprime number because it is at equal distance from previous prime (18733794017) and next prime (18733794019).

It is not an unprimeable number, because it can be changed into a prime (18733794017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 595198 + ... + 625881.

It is an arithmetic number, because the mean of its divisors is an integer number (2342641980).

Almost surely, 2^18733794018 is an apocalyptic number.

18733794018 is an abundant number, since it is smaller than the sum of its proper divisors (18748477662).

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

18733794018 is a wasteful number, since it uses less digits than its factorization.

18733794018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223641.

The product of its (nonzero) digits is 1016064, while the sum is 51.

The spelling of 18733794018 in words is "eighteen billion, seven hundred thirty-three million, seven hundred ninety-four thousand, eighteen".