18875547564 has 12 divisors (see below), whose sum is σ = 44042944344. Its totient is φ = 6291849184.

The previous prime is 18875547539. The next prime is 18875547583. The reversal of 18875547564 is 46574557881.

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

It is a junction number, because it is equal to n+sod(n) for n = 18875547498 and 18875547507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 786481137 + ... + 786481160.

It is an arithmetic number, because the mean of its divisors is an integer number (3670245362).

Almost surely, 2^18875547564 is an apocalyptic number.

It is an amenable number.

18875547564 is an abundant number, since it is smaller than the sum of its proper divisors (25167396780).

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

18875547564 is a wasteful number, since it uses less digits than its factorization.

18875547564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572962304 (or 1572962302 counting only the distinct ones).

The product of its digits is 37632000, while the sum is 60.

The spelling of 18875547564 in words is "eighteen billion, eight hundred seventy-five million, five hundred forty-seven thousand, five hundred sixty-four".