19968319 has 8 divisors (see below), whose sum is σ = 24163488. Its totient is φ = 16108800.

The previous prime is 19968317. The next prime is 19968331. The reversal of 19968319 is 91386991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19968319 - 2¹ = 19968317 is a prime.

It is a super-2 number, since 2×19968319² = 797467527371522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19968313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83782 + ... + 84019.

It is an arithmetic number, because the mean of its divisors is an integer number (3020436).

Almost surely, 2^19968319 is an apocalyptic number.

19968319 is a deficient number, since it is larger than the sum of its proper divisors (4195169).

19968319 is a wasteful number, since it uses less digits than its factorization.

19968319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167825.

The product of its digits is 104976, while the sum is 46.

The square root of 19968319 is about 4468.5925077143. The cubic root of 19968319 is about 271.2983601402.

The spelling of 19968319 in words is "nineteen million, nine hundred sixty-eight thousand, three hundred nineteen".