19968683 has 4 divisors (see below), whose sum is σ = 22821360. Its totient is φ = 17116008.

The previous prime is 19968671. The next prime is 19968701. The reversal of 19968683 is 38686991.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 19968683 - 2²⁰ = 18920107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19928683) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1426328 + ... + 1426341.

It is an arithmetic number, because the mean of its divisors is an integer number (5705340).

Almost surely, 2^19968683 is an apocalyptic number.

19968683 is a deficient number, since it is larger than the sum of its proper divisors (2852677).

19968683 is an equidigital number, since it uses as much as digits as its factorization.

19968683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2852676.

The product of its digits is 559872, while the sum is 50.

The square root of 19968683 is about 4468.6332362368. The cubic root of 19968683 is about 271.3000086182.

The spelling of 19968683 in words is "nineteen million, nine hundred sixty-eight thousand, six hundred eighty-three".