18514213 has 4 divisors (see below), whose sum is σ = 18537120. Its totient is φ = 18491308.

The previous prime is 18514201. The next prime is 18514219. The reversal of 18514213 is 31241581.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18514213 - 2⁹ = 18513701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18514219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10195 + ... + 11872.

It is an arithmetic number, because the mean of its divisors is an integer number (4634280).

Almost surely, 2^18514213 is an apocalyptic number.

It is an amenable number.

18514213 is a deficient number, since it is larger than the sum of its proper divisors (22907).

18514213 is an equidigital number, since it uses as much as digits as its factorization.

18514213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22906.

The product of its digits is 960, while the sum is 25.

The square root of 18514213 is about 4302.8145439933. The cubic root of 18514213 is about 264.5463366516.

Adding to 18514213 its reverse (31241581), we get a palindrome (49755794).

The spelling of 18514213 in words is "eighteen million, five hundred fourteen thousand, two hundred thirteen".