19884934016 has 32 divisors (see below), whose sum is σ = 39693402000. Its totient is φ = 9922668544.

The previous prime is 19884934007. The next prime is 19884934019. The reversal of 19884934016 is 61043948891.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19884934019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90041 + ... + 218808.

Almost surely, 2^19884934016 is an apocalyptic number.

19884934016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

19884934016 is a deficient number, since it is larger than the sum of its proper divisors (19808467984).

19884934016 is an equidigital number, since it uses as much as digits as its factorization.

19884934016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309366 (or 309354 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 19884934016 in words is "nineteen billion, eight hundred eighty-four million, nine hundred thirty-four thousand, sixteen".