18468305 has 4 divisors (see below), whose sum is σ = 22161972. Its totient is φ = 14774640.

The previous prime is 18468293. The next prime is 18468311. The reversal of 18468305 is 50386481.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6385729 + 12082576 = 2527^2 + 3476^2 .

It is not a de Polignac number, because 18468305 - 2⁸ = 18468049 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1846826 + ... + 1846835.

It is an arithmetic number, because the mean of its divisors is an integer number (5540493).

Almost surely, 2^18468305 is an apocalyptic number.

It is an amenable number.

18468305 is a deficient number, since it is larger than the sum of its proper divisors (3693667).

18468305 is an equidigital number, since it uses as much as digits as its factorization.

18468305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3693666.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 18468305 is about 4297.4765851602. The cubic root of 18468305 is about 264.3274985588.

The spelling of 18468305 in words is "eighteen million, four hundred sixty-eight thousand, three hundred five".