18473018 has 16 divisors (see below), whose sum is σ = 28512000. Its totient is φ = 8972832.

The previous prime is 18473017. The next prime is 18473023. The reversal of 18473018 is 81037481.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18473011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9623 + ... + 11381.

It is an arithmetic number, because the mean of its divisors is an integer number (1782000).

Almost surely, 2^18473018 is an apocalyptic number.

18473018 is a deficient number, since it is larger than the sum of its proper divisors (10038982).

18473018 is a wasteful number, since it uses less digits than its factorization.

18473018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1909.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 18473018 is about 4298.0248952280. The cubic root of 18473018 is about 264.3499815740.

The spelling of 18473018 in words is "eighteen million, four hundred seventy-three thousand, eighteen".