18873000564 has 24 divisors (see below), whose sum is σ = 48040365408. Its totient is φ = 5719091040.

The previous prime is 18873000563. The next prime is 18873000569. The reversal of 18873000564 is 46500037881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18873000563) 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, 71488507 + ... + 71488770.

It is an arithmetic number, because the mean of its divisors is an integer number (2001681892).

Almost surely, 2^18873000564 is an apocalyptic number.

It is an amenable number.

18873000564 is an abundant number, since it is smaller than the sum of its proper divisors (29167364844).

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

18873000564 is a wasteful number, since it uses less digits than its factorization.

18873000564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142977295 (or 142977293 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 18873000564 in words is "eighteen billion, eight hundred seventy-three million, five hundred sixty-four", and thus it is an aban number.