19204969812 has 24 divisors (see below), whose sum is σ = 51213253056. Its totient is φ = 5487134208.

The previous prime is 19204969799. The next prime is 19204969897. The reversal of 19204969812 is 21896940291.

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, 114315213 + ... + 114315380.

It is an arithmetic number, because the mean of its divisors is an integer number (2133885544).

Almost surely, 2^19204969812 is an apocalyptic number.

19204969812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19204969812 is an abundant number, since it is smaller than the sum of its proper divisors (32008283244).

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

19204969812 is a wasteful number, since it uses less digits than its factorization.

19204969812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228630607 (or 228630605 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 51.

The spelling of 19204969812 in words is "nineteen billion, two hundred four million, nine hundred sixty-nine thousand, eight hundred twelve".