19018425984 has 64 divisors (see below), whose sum is σ = 50540910240. Its totient is φ = 6336562176.

The previous prime is 19018425913. The next prime is 19018425989. The reversal of 19018425984 is 48952481091.

It is a tau number, because it is divible by the number of its divisors (64).

It is not an unprimeable number, because it can be changed into a prime (19018425989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 925647 + ... + 945969.

Almost surely, 2^19018425984 is an apocalyptic number.

It is an amenable number.

19018425984 is an abundant number, since it is smaller than the sum of its proper divisors (31522484256).

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

19018425984 is a wasteful number, since it uses less digits than its factorization.

19018425984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22777 (or 22765 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 51.

The spelling of 19018425984 in words is "nineteen billion, eighteen million, four hundred twenty-five thousand, nine hundred eighty-four".