18244414 has 4 divisors (see below), whose sum is σ = 27366624. Its totient is φ = 9122206.

The previous prime is 18244411. The next prime is 18244433. The reversal of 18244414 is 41444281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41444281 = 137 ⋅302513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18244411) by changing a digit.

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 as a sum of consecutive naturals, namely, 4561102 + ... + 4561105.

It is an arithmetic number, because the mean of its divisors is an integer number (6841656).

Almost surely, 2^18244414 is an apocalyptic number.

18244414 is a deficient number, since it is larger than the sum of its proper divisors (9122210).

18244414 is an equidigital number, since it uses as much as digits as its factorization.

18244414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9122209.

The product of its digits is 4096, while the sum is 28.

The square root of 18244414 is about 4271.3480307744. The cubic root of 18244414 is about 263.2550067034.

Adding to 18244414 its reverse (41444281), we get a palindrome (59688695).

The spelling of 18244414 in words is "eighteen million, two hundred forty-four thousand, four hundred fourteen".