19963388984 has 32 divisors (see below), whose sum is σ = 46667664000. Its totient is φ = 7777943520.

The previous prime is 19963388957. The next prime is 19963388993. The reversal of 19963388984 is 48988336991.

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, 16203434 + ... + 16204665.

It is an arithmetic number, because the mean of its divisors is an integer number (1458364500).

Almost surely, 2^19963388984 is an apocalyptic number.

19963388984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19963388984 is an abundant number, since it is smaller than the sum of its proper divisors (26704275016).

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

19963388984 is a wasteful number, since it uses less digits than its factorization.

19963388984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32408123 (or 32408119 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 68.

The spelling of 19963388984 in words is "nineteen billion, nine hundred sixty-three million, three hundred eighty-eight thousand, nine hundred eighty-four".