18445214 has 4 divisors (see below), whose sum is σ = 27667824. Its totient is φ = 9222606.

The previous prime is 18445201. The next prime is 18445253. The reversal of 18445214 is 41254481.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4611302 + ... + 4611305.

It is an arithmetic number, because the mean of its divisors is an integer number (6916956).

Almost surely, 2^18445214 is an apocalyptic number.

18445214 is a deficient number, since it is larger than the sum of its proper divisors (9222610).

18445214 is an equidigital number, since it uses as much as digits as its factorization.

18445214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9222609.

The product of its digits is 5120, while the sum is 29.

The square root of 18445214 is about 4294.7891682829. The cubic root of 18445214 is about 264.2172893506.

Adding to 18445214 its reverse (41254481), we get a palindrome (59699695).

The spelling of 18445214 in words is "eighteen million, four hundred forty-five thousand, two hundred fourteen".