19892021404 has 12 divisors (see below), whose sum is σ = 34910785000. Its totient is φ = 9917511408.

The previous prime is 19892021399. The next prime is 19892021411. The reversal of 19892021404 is 40412029891.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7123254 + ... + 7126045.

Almost surely, 2^19892021404 is an apocalyptic number.

It is an amenable number.

19892021404 is a deficient number, since it is larger than the sum of its proper divisors (15018763596).

19892021404 is a wasteful number, since it uses less digits than its factorization.

19892021404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14249652 (or 14249650 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 19892021404 in words is "nineteen billion, eight hundred ninety-two million, twenty-one thousand, four hundred four".