19442328823 has 4 divisors (see below), whose sum is σ = 19771859880. Its totient is φ = 19112797768.

The previous prime is 19442328793. The next prime is 19442328847. The reversal of 19442328823 is 32882324491.

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

It is a cyclic number.

It is not a de Polignac number, because 19442328823 - 2²⁵ = 19408774391 is a prime.

It is a super-3 number, since 3×19442328823³ (a number of 32 digits) contains 333 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 (19442328853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164765440 + ... + 164765557.

It is an arithmetic number, because the mean of its divisors is an integer number (4942964970).

Almost surely, 2^19442328823 is an apocalyptic number.

19442328823 is a deficient number, since it is larger than the sum of its proper divisors (329531057).

19442328823 is an equidigital number, since it uses as much as digits as its factorization.

19442328823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329531056.

The product of its digits is 663552, while the sum is 46.

The spelling of 19442328823 in words is "nineteen billion, four hundred forty-two million, three hundred twenty-eight thousand, eight hundred twenty-three".