18872988164 has 6 divisors (see below), whose sum is σ = 33027729294. Its totient is φ = 9436494080.

The previous prime is 18872988151. The next prime is 18872988181. The reversal of 18872988164 is 46188927881.

It can be written as a sum of positive squares in only one way, i.e., 16012877764 + 2860110400 = 126542^2 + 53480^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18872988097 and 18872988106.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2359123517 + ... + 2359123524.

It is an arithmetic number, because the mean of its divisors is an integer number (5504621549).

Almost surely, 2^18872988164 is an apocalyptic number.

It is an amenable number.

18872988164 is a deficient number, since it is larger than the sum of its proper divisors (14154741130).

18872988164 is a wasteful number, since it uses less digits than its factorization.

18872988164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4718247045 (or 4718247043 counting only the distinct ones).

The product of its digits is 12386304, while the sum is 62.

The spelling of 18872988164 in words is "eighteen billion, eight hundred seventy-two million, nine hundred eighty-eight thousand, one hundred sixty-four".