18549414 has 48 divisors (see below), whose sum is σ = 45837792. Its totient is φ = 5370624.

The previous prime is 18549409. The next prime is 18549449. The reversal of 18549414 is 41494581.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1647 + ... + 6309.

It is an arithmetic number, because the mean of its divisors is an integer number (954954).

Almost surely, 2^18549414 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18549414, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22918896).

18549414 is an abundant number, since it is smaller than the sum of its proper divisors (27288378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18549414 is a wasteful number, since it uses less digits than its factorization.

18549414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4701 (or 4698 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 18549414 is about 4306.9030636874. The cubic root of 18549414 is about 264.7138908078.

The spelling of 18549414 in words is "eighteen million, five hundred forty-nine thousand, four hundred fourteen".