19428189204 has 24 divisors (see below), whose sum is σ = 45335264128. Its totient is φ = 6475659840.

The previous prime is 19428189173. The next prime is 19428189223. The reversal of 19428189204 is 40298182491.

It is a congruent number.

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, 200184 + ... + 280944.

Almost surely, 2^19428189204 is an apocalyptic number.

It is an amenable number.

19428189204 is an abundant number, since it is smaller than the sum of its proper divisors (25907074924).

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

19428189204 is a wasteful number, since it uses less digits than its factorization.

19428189204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100815 (or 100813 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 48.

The spelling of 19428189204 in words is "nineteen billion, four hundred twenty-eight million, one hundred eighty-nine thousand, two hundred four".