18879462840 has 384 divisors, whose sum is σ = 69476616000. Its totient is φ = 4085932032.

The previous prime is 18879462827. The next prime is 18879462857. The reversal of 18879462840 is 4826497881.

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 95 ways as a sum of consecutive naturals, for example, 9036516 + ... + 9038604.

Almost surely, 2^18879462840 is an apocalyptic number.

18879462840 is a gapful number since it is divisible by the number (10) 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 18879462840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34738308000).

18879462840 is an abundant number, since it is smaller than the sum of its proper divisors (50597153160).

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

18879462840 is a wasteful number, since it uses less digits than its factorization.

18879462840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2199 (or 2188 counting only the distinct ones).

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

The spelling of 18879462840 in words is "eighteen billion, eight hundred seventy-nine million, four hundred sixty-two thousand, eight hundred forty".