18876743424 has 648 divisors, whose sum is σ = 72519239520. Its totient is φ = 4606525440.

The previous prime is 18876743387. The next prime is 18876743443. The reversal of 18876743424 is 42434767881.

18876743424 is a `hidden beast` number, since 1 + 88 + 76 + 74 + 3 + 424 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 33175012 + ... + 33175580.

Almost surely, 2^18876743424 is an apocalyptic number.

18876743424 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18876743424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36259619760).

18876743424 is an abundant number, since it is smaller than the sum of its proper divisors (53642496096).

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

18876743424 is a wasteful number, since it uses less digits than its factorization.

18876743424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 609 counting only the distinct ones).

The product of its digits is 7225344, while the sum is 54.

The spelling of 18876743424 in words is "eighteen billion, eight hundred seventy-six million, seven hundred forty-three thousand, four hundred twenty-four".