18855323 has 4 divisors (see below), whose sum is σ = 18960840. Its totient is φ = 18749808.

The previous prime is 18855299. The next prime is 18855337. The reversal of 18855323 is 32355881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32355881 = 47 ⋅688423.

It is a cyclic number.

It is not a de Polignac number, because 18855323 - 2¹² = 18851227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18855373) 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, 52490 + ... + 52847.

It is an arithmetic number, because the mean of its divisors is an integer number (4740210).

Almost surely, 2^18855323 is an apocalyptic number.

18855323 is a deficient number, since it is larger than the sum of its proper divisors (105517).

18855323 is a wasteful number, since it uses less digits than its factorization.

18855323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105516.

The product of its digits is 28800, while the sum is 35.

The square root of 18855323 is about 4342.2716405126. The cubic root of 18855323 is about 266.1611466314.

The spelling of 18855323 in words is "eighteen million, eight hundred fifty-five thousand, three hundred twenty-three".