19628505384 has 32 divisors (see below), whose sum is σ = 49074861120. Its totient is φ = 6542355456.

The previous prime is 19628505359. The next prime is 19628505401. The reversal of 19628505384 is 48350582691.

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, 484104 + ... + 523080.

It is an arithmetic number, because the mean of its divisors is an integer number (1533589410).

Almost surely, 2^19628505384 is an apocalyptic number.

It is an amenable number.

19628505384 is an abundant number, since it is smaller than the sum of its proper divisors (29446355736).

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

19628505384 is a wasteful number, since it uses less digits than its factorization.

19628505384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59969 (or 59965 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 19628505384 in words is "nineteen billion, six hundred twenty-eight million, five hundred five thousand, three hundred eighty-four".