18672890484 has 12 divisors (see below), whose sum is σ = 43570077824. Its totient is φ = 6224296824.

The previous prime is 18672890477. The next prime is 18672890503. The reversal of 18672890484 is 48409827681.

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

It is a congruent number.

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, 778037092 + ... + 778037115.

Almost surely, 2^18672890484 is an apocalyptic number.

It is an amenable number.

18672890484 is an abundant number, since it is smaller than the sum of its proper divisors (24897187340).

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

18672890484 is a wasteful number, since it uses less digits than its factorization.

18672890484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556074214 (or 1556074212 counting only the distinct ones).

The product of its (nonzero) digits is 6193152, while the sum is 57.

The spelling of 18672890484 in words is "eighteen billion, six hundred seventy-two million, eight hundred ninety thousand, four hundred eighty-four".