18519058544 has 20 divisors (see below), whose sum is σ = 41006487024. Its totient is φ = 7936739328.

The previous prime is 18519058489. The next prime is 18519058573. The reversal of 18519058544 is 44585091581.

It is a junction number, because it is equal to n+sod(n) for n = 18519058492 and 18519058501.

It is a congruent number.

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, 82674257 + ... + 82674480.

Almost surely, 2^18519058544 is an apocalyptic number.

18519058544 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18519058544 is an abundant number, since it is smaller than the sum of its proper divisors (22487428480).

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

18519058544 is a wasteful number, since it uses less digits than its factorization.

18519058544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165348752 (or 165348746 counting only the distinct ones).

The product of its (nonzero) digits is 1152000, while the sum is 50.

The spelling of 18519058544 in words is "eighteen billion, five hundred nineteen million, fifty-eight thousand, five hundred forty-four".