19326399868 has 6 divisors (see below), whose sum is σ = 33821199776. Its totient is φ = 9663199932.

The previous prime is 19326399839. The next prime is 19326399871. The reversal of 19326399868 is 86899362391.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2415799980 + ... + 2415799987.

Almost surely, 2^19326399868 is an apocalyptic number.

It is an amenable number.

19326399868 is a deficient number, since it is larger than the sum of its proper divisors (14494799908).

19326399868 is a wasteful number, since it uses less digits than its factorization.

19326399868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4831599971 (or 4831599969 counting only the distinct ones).

The product of its digits is 30233088, while the sum is 64.

The spelling of 19326399868 in words is "nineteen billion, three hundred twenty-six million, three hundred ninety-nine thousand, eight hundred sixty-eight".