18214285 has 8 divisors (see below), whose sum is σ = 22183776. Its totient is φ = 14353680.

The previous prime is 18214283. The next prime is 18214297. The reversal of 18214285 is 58241281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18214285 - 2¹ = 18214283 is a prime.

It is a super-2 number, since 2×18214285² = 663520356122450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18214283) 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, 26851 + ... + 27520.

It is an arithmetic number, because the mean of its divisors is an integer number (2772972).

Almost surely, 2^18214285 is an apocalyptic number.

It is an amenable number.

18214285 is a deficient number, since it is larger than the sum of its proper divisors (3969491).

18214285 is an equidigital number, since it uses as much as digits as its factorization.

18214285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54443.

The product of its digits is 5120, while the sum is 31.

The square root of 18214285 is about 4267.8197009714. The cubic root of 18214285 is about 263.1100129129.

The spelling of 18214285 in words is "eighteen million, two hundred fourteen thousand, two hundred eighty-five".