18475806 has 16 divisors (see below), whose sum is σ = 37033344. Its totient is φ = 6144984.

The previous prime is 18475801. The next prime is 18475817. The reversal of 18475806 is 60857481.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18475801) 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, 240 + ... + 6083.

It is an arithmetic number, because the mean of its divisors is an integer number (2314584).

Almost surely, 2^18475806 is an apocalyptic number.

18475806 is an abundant number, since it is smaller than the sum of its proper divisors (18557538).

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

18475806 is a wasteful number, since it uses less digits than its factorization.

18475806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6815.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 18475806 is about 4298.3492180138. The cubic root of 18475806 is about 264.3632797201.

The spelling of 18475806 in words is "eighteen million, four hundred seventy-five thousand, eight hundred six".