18478323 has 12 divisors (see below), whose sum is σ = 26869648. Its totient is φ = 12236400.

The previous prime is 18478321. The next prime is 18478351. The reversal of 18478323 is 32387481.

It is not a de Polignac number, because 18478323 - 2¹ = 18478321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18478321) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5440 + ... + 8157.

Almost surely, 2^18478323 is an apocalyptic number.

18478323 is a deficient number, since it is larger than the sum of its proper divisors (8391325).

18478323 is a wasteful number, since it uses less digits than its factorization.

18478323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13754 (or 13751 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 18478323 is about 4298.6419948630. The cubic root of 18478323 is about 264.3752841068.

The spelling of 18478323 in words is "eighteen million, four hundred seventy-eight thousand, three hundred twenty-three".