18942323 has 4 divisors (see below), whose sum is σ = 18964800. Its totient is φ = 18919848.

The previous prime is 18942311. The next prime is 18942337. The reversal of 18942323 is 32324981.

It is a happy number.

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 18942323 - 2¹⁶ = 18876787 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18942323.

It is not an unprimeable number, because it can be changed into a prime (18942223) 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, 9923 + ... + 11676.

It is an arithmetic number, because the mean of its divisors is an integer number (4741200).

Almost surely, 2^18942323 is an apocalyptic number.

18942323 is a deficient number, since it is larger than the sum of its proper divisors (22477).

18942323 is an equidigital number, since it uses as much as digits as its factorization.

18942323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22476.

The product of its digits is 10368, while the sum is 32.

The square root of 18942323 is about 4352.2779093252. The cubic root of 18942323 is about 266.5698817171.

The spelling of 18942323 in words is "eighteen million, nine hundred forty-two thousand, three hundred twenty-three".