18327934788 has 12 divisors (see below), whose sum is σ = 42765181200. Its totient is φ = 6109311592.

The previous prime is 18327934747. The next prime is 18327934789. The reversal of 18327934788 is 88743972381.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (18327934789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 763663938 + ... + 763663961.

It is an arithmetic number, because the mean of its divisors is an integer number (3563765100).

Almost surely, 2^18327934788 is an apocalyptic number.

It is an amenable number.

18327934788 is an abundant number, since it is smaller than the sum of its proper divisors (24437246412).

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

18327934788 is a wasteful number, since it uses less digits than its factorization.

18327934788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1527327906 (or 1527327904 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 60.

The spelling of 18327934788 in words is "eighteen billion, three hundred twenty-seven million, nine hundred thirty-four thousand, seven hundred eighty-eight".