18214305 has 16 divisors (see below), whose sum is σ = 29315520. Its totient is φ = 9656768.

The previous prime is 18214297. The next prime is 18214363. The reversal of 18214305 is 50341281.

It is a cyclic number.

It is not a de Polignac number, because 18214305 - 2³ = 18214297 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 915 + ... + 6104.

It is an arithmetic number, because the mean of its divisors is an integer number (1832220).

Almost surely, 2^18214305 is an apocalyptic number.

18214305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18214305 is a deficient number, since it is larger than the sum of its proper divisors (11101215).

18214305 is a wasteful number, since it uses less digits than its factorization.

18214305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7200.

The product of its (nonzero) digits is 960, while the sum is 24.

The square root of 18214305 is about 4267.8220440876. The cubic root of 18214305 is about 263.1101092146.

Adding to 18214305 its reverse (50341281), we get a palindrome (68555586).

The spelling of 18214305 in words is "eighteen million, two hundred fourteen thousand, three hundred five".