19836803344 has 40 divisors (see below), whose sum is σ = 39354793632. Its totient is φ = 9681047040.

The previous prime is 19836803257. The next prime is 19836803347. The reversal of 19836803344 is 44330863891.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (19836803347) 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, 1071672 + ... + 1090024.

Almost surely, 2^19836803344 is an apocalyptic number.

It is an amenable number.

19836803344 is a deficient number, since it is larger than the sum of its proper divisors (19517990288).

19836803344 is a wasteful number, since it uses less digits than its factorization.

19836803344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19975 (or 19969 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 49.

The spelling of 19836803344 in words is "nineteen billion, eight hundred thirty-six million, eight hundred three thousand, three hundred forty-four".