18881340884 has 24 divisors (see below), whose sum is σ = 37765654080. Its totient is φ = 8091366336.

The previous prime is 18881340859. The next prime is 18881340901. The reversal of 18881340884 is 48804318881.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 573872 + ... + 605880.

It is an arithmetic number, because the mean of its divisors is an integer number (1573568920).

Almost surely, 2^18881340884 is an apocalyptic number.

18881340884 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18881340884 is an abundant number, since it is smaller than the sum of its proper divisors (18884313196).

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

18881340884 is a wasteful number, since it uses less digits than its factorization.

18881340884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53087 (or 53085 counting only the distinct ones).

The product of its (nonzero) digits is 1572864, while the sum is 53.

The spelling of 18881340884 in words is "eighteen billion, eight hundred eighty-one million, three hundred forty thousand, eight hundred eighty-four".