18423066 has 16 divisors (see below), whose sum is σ = 36946944. Its totient is φ = 6124224.

The previous prime is 18423061. The next prime is 18423073. The reversal of 18423066 is 66032481.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18423061) 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, 1711 + ... + 6306.

It is an arithmetic number, because the mean of its divisors is an integer number (2309184).

Almost surely, 2^18423066 is an apocalyptic number.

18423066 is an abundant number, since it is smaller than the sum of its proper divisors (18523878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18423066 is a wasteful number, since it uses less digits than its factorization.

18423066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8405.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 18423066 is about 4292.2099203091. The cubic root of 18423066 is about 264.1114944581. Note that the first 3 decimals are identical.

The spelling of 18423066 in words is "eighteen million, four hundred twenty-three thousand, sixty-six".