19804611364 has 24 divisors (see below), whose sum is σ = 34812263808. Its totient is φ = 9858313920.

The previous prime is 19804611349. The next prime is 19804611371. The reversal of 19804611364 is 46311640891.

It is a self number, because there is not a number n which added to its sum of digits gives 19804611364.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1367449 + ... + 1381855.

It is an arithmetic number, because the mean of its divisors is an integer number (1450510992).

Almost surely, 2^19804611364 is an apocalyptic number.

It is an amenable number.

19804611364 is a deficient number, since it is larger than the sum of its proper divisors (15007652444).

19804611364 is a wasteful number, since it uses less digits than its factorization.

19804611364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15915 (or 15913 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 43.

The spelling of 19804611364 in words is "nineteen billion, eight hundred four million, six hundred eleven thousand, three hundred sixty-four".