18387028548 has 36 divisors (see below), whose sum is σ = 53118083200. Its totient is φ = 5253436656.

The previous prime is 18387028493. The next prime is 18387028549. The reversal of 18387028548 is 84582078381.

18387028548 is a `hidden beast` number, since 1 + 8 + 3 + 8 + 70 + 28 + 548 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 18387028494 and 18387028503.

It is not an unprimeable number, because it can be changed into a prime (18387028549) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36481948 + ... + 36482451.

Almost surely, 2^18387028548 is an apocalyptic number.

18387028548 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18387028548 is an abundant number, since it is smaller than the sum of its proper divisors (34731054652).

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

18387028548 is a wasteful number, since it uses less digits than its factorization.

18387028548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72964416 (or 72964411 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 54.

The spelling of 18387028548 in words is "eighteen billion, three hundred eighty-seven million, twenty-eight thousand, five hundred forty-eight".