19178119164 has 48 divisors (see below), whose sum is σ = 47833470720. Its totient is φ = 5965618560.

The previous prime is 19178119157. The next prime is 19178119189. The reversal of 19178119164 is 46191187191.

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 15 ways as a sum of consecutive naturals, for example, 836074 + ... + 858705.

It is an arithmetic number, because the mean of its divisors is an integer number (996530640).

Almost surely, 2^19178119164 is an apocalyptic number.

It is an amenable number.

19178119164 is an abundant number, since it is smaller than the sum of its proper divisors (28655351556).

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

19178119164 is a wasteful number, since it uses less digits than its factorization.

19178119164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1694850 (or 1694848 counting only the distinct ones).

The product of its digits is 108864, while the sum is 48.

The spelling of 19178119164 in words is "nineteen billion, one hundred seventy-eight million, one hundred nineteen thousand, one hundred sixty-four".