19982323 has 4 divisors (see below), whose sum is σ = 20047720. Its totient is φ = 19916928.

The previous prime is 19982317. The next prime is 19982341. The reversal of 19982323 is 32328991.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19982323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19982353) 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, 32238 + ... + 32851.

It is an arithmetic number, because the mean of its divisors is an integer number (5011930).

Almost surely, 2^19982323 is an apocalyptic number.

19982323 is a deficient number, since it is larger than the sum of its proper divisors (65397).

19982323 is an equidigital number, since it uses as much as digits as its factorization.

19982323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65396.

The product of its digits is 23328, while the sum is 37.

The square root of 19982323 is about 4470.1591694256. The cubic root of 19982323 is about 271.3617668200.

The spelling of 19982323 in words is "nineteen million, nine hundred eighty-two thousand, three hundred twenty-three".