18378323 has 8 divisors (see below), whose sum is σ = 18931200. Its totient is φ = 17833608.

The previous prime is 18378317. The next prime is 18378337. The reversal of 18378323 is 32387381.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18378323 - 2⁸ = 18378067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18378313) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2690 + ... + 6632.

It is an arithmetic number, because the mean of its divisors is an integer number (2366400).

Almost surely, 2^18378323 is an apocalyptic number.

18378323 is a deficient number, since it is larger than the sum of its proper divisors (552877).

18378323 is an equidigital number, since it uses as much as digits as its factorization.

18378323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4081.

The product of its digits is 24192, while the sum is 35.

The square root of 18378323 is about 4286.9946349395. The cubic root of 18378323 is about 263.8975105307.

The spelling of 18378323 in words is "eighteen million, three hundred seventy-eight thousand, three hundred twenty-three".