19216987392 has 36 divisors (see below), whose sum is σ = 51145213280. Its totient is φ = 6405662208.

The previous prime is 19216987343. The next prime is 19216987399. The reversal of 19216987392 is 29378961291.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19216987399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12510292 + ... + 12511827.

Almost surely, 2^19216987392 is an apocalyptic number.

19216987392 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19216987392 is an abundant number, since it is smaller than the sum of its proper divisors (31928225888).

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

19216987392 is an equidigital number, since it uses as much as digits as its factorization.

19216987392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25022138 (or 25022124 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 57.

The spelling of 19216987392 in words is "nineteen billion, two hundred sixteen million, nine hundred eighty-seven thousand, three hundred ninety-two".