19842824988 has 108 divisors (see below), whose sum is σ = 60508512792. Its totient is φ = 5669364960.

The previous prime is 19842824957. The next prime is 19842825001. The reversal of 19842824988 is 88942824891.

19842824988 is a `hidden beast` number, since 1 + 98 + 428 + 2 + 49 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (108).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 160683 + ... + 255938.

Almost surely, 2^19842824988 is an apocalyptic number.

19842824988 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

19842824988 is an abundant number, since it is smaller than the sum of its proper divisors (40665687804).

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

19842824988 is a wasteful number, since it uses less digits than its factorization.

19842824988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416654 (or 416633 counting only the distinct ones).

The product of its digits is 21233664, while the sum is 63.

The spelling of 19842824988 in words is "nineteen billion, eight hundred forty-two million, eight hundred twenty-four thousand, nine hundred eighty-eight".