18506812284 has 30 divisors (see below), whose sum is σ = 48380463824. Its totient is φ = 6168937320.

The previous prime is 18506812283. The next prime is 18506812297. The reversal of 18506812284 is 48221860581.

18506812284 is a `hidden beast` number, since 18 + 506 + 8 + 122 + 8 + 4 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18506812283) by changing a digit.

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 9 ways as a sum of consecutive naturals, for example, 28559572 + ... + 28560219.

Almost surely, 2^18506812284 is an apocalyptic number.

It is an amenable number.

18506812284 is an abundant number, since it is smaller than the sum of its proper divisors (29873651540).

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

18506812284 is a wasteful number, since it uses less digits than its factorization.

18506812284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57119807 (or 57119796 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The spelling of 18506812284 in words is "eighteen billion, five hundred six million, eight hundred twelve thousand, two hundred eighty-four".