18984345875 has 16 divisors (see below), whose sum is σ = 25846325856. Its totient is φ = 13806796000.

The previous prime is 18984345847. The next prime is 18984345883. The reversal of 18984345875 is 57854348981.

It is a de Polignac number, because none of the positive numbers 2^k-18984345875 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6902024 + ... + 6904773.

It is an arithmetic number, because the mean of its divisors is an integer number (1615395366).

Almost surely, 2^18984345875 is an apocalyptic number.

18984345875 is a deficient number, since it is larger than the sum of its proper divisors (6861979981).

18984345875 is a wasteful number, since it uses less digits than its factorization.

18984345875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13806823 (or 13806813 counting only the distinct ones).

The product of its digits is 38707200, while the sum is 62.

The spelling of 18984345875 in words is "eighteen billion, nine hundred eighty-four million, three hundred forty-five thousand, eight hundred seventy-five".