18799323 has 4 divisors (see below), whose sum is σ = 25065768. Its totient is φ = 12532880.

The previous prime is 18799271. The next prime is 18799327. The reversal of 18799323 is 32399781.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32399781 = 3 ⋅10799927.

It is a cyclic number.

It is not a de Polignac number, because 18799323 - 2⁹ = 18798811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18799327) 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, 3133218 + ... + 3133223.

It is an arithmetic number, because the mean of its divisors is an integer number (6266442).

Almost surely, 2^18799323 is an apocalyptic number.

18799323 is a deficient number, since it is larger than the sum of its proper divisors (6266445).

18799323 is an equidigital number, since it uses as much as digits as its factorization.

18799323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6266444.

The product of its digits is 81648, while the sum is 42.

The square root of 18799323 is about 4335.8186078294. The cubic root of 18799323 is about 265.8973872587.

The spelling of 18799323 in words is "eighteen million, seven hundred ninety-nine thousand, three hundred twenty-three".