18538483604928 has 224 divisors, whose sum is σ = 60734640536064. Its totient is φ = 4869204738048.

The previous prime is 18538483604917. The next prime is 18538483604939. The reversal of 18538483604928 is 82940638483581.

It is an interprime number because it is at equal distance from previous prime (18538483604917) and next prime (18538483604939).

It is a tau number, because it is divible by the number of its divisors (224).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8452225 + ... + 10417152.

Almost surely, 2^{18538483604928} is an apocalyptic number.

It is an amenable number.

18538483604928 is an abundant number, since it is smaller than the sum of its proper divisors (42196156931136).

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

18538483604928 is a wasteful number, since it uses less digits than its factorization.

18538483604928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18869459 (or 18869449 counting only the distinct ones).

The product of its (nonzero) digits is 318504960, while the sum is 69.

The spelling of 18538483604928 in words is "eighteen trillion, five hundred thirty-eight billion, four hundred eighty-three million, six hundred four thousand, nine hundred twenty-eight".