18388754680 has 16 divisors (see below), whose sum is σ = 41374698120. Its totient is φ = 7355501856.

The previous prime is 18388754647. The next prime is 18388754687. The reversal of 18388754680 is 8645788381.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18388754687) 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, 229859394 + ... + 229859473.

Almost surely, 2^18388754680 is an apocalyptic number.

18388754680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18388754680 is an abundant number, since it is smaller than the sum of its proper divisors (22985943440).

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

18388754680 is a wasteful number, since it uses less digits than its factorization.

18388754680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459718878 (or 459718874 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 58.

The spelling of 18388754680 in words is "eighteen billion, three hundred eighty-eight million, seven hundred fifty-four thousand, six hundred eighty".