18243214 has 8 divisors (see below), whose sum is σ = 29852568. Its totient is φ = 8292360.

The previous prime is 18243161. The next prime is 18243241. The reversal of 18243214 is 41234281.

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

It is a congruent 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, 414597 + ... + 414640.

It is an arithmetic number, because the mean of its divisors is an integer number (3731571).

Almost surely, 2^18243214 is an apocalyptic number.

18243214 is a deficient number, since it is larger than the sum of its proper divisors (11609354).

18243214 is a wasteful number, since it uses less digits than its factorization.

18243214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 829250.

The product of its digits is 1536, while the sum is 25.

The square root of 18243214 is about 4271.2075575884. The cubic root of 18243214 is about 263.2492348374.

Adding to 18243214 its reverse (41234281), we get a palindrome (59477495).

The spelling of 18243214 in words is "eighteen million, two hundred forty-three thousand, two hundred fourteen".