18516503848 has 16 divisors (see below), whose sum is σ = 34719888960. Its totient is φ = 9257866800.

The previous prime is 18516503839. The next prime is 18516503851. The reversal of 18516503848 is 84830561581.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 346353 + ... + 396223.

It is an arithmetic number, because the mean of its divisors is an integer number (2169993060).

Almost surely, 2^18516503848 is an apocalyptic number.

It is an amenable number.

18516503848 is a deficient number, since it is larger than the sum of its proper divisors (16203385112).

18516503848 is a wasteful number, since it uses less digits than its factorization.

18516503848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96288 (or 96284 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 49.

The spelling of 18516503848 in words is "eighteen billion, five hundred sixteen million, five hundred three thousand, eight hundred forty-eight".