18344227 has 8 divisors (see below), whose sum is σ = 20060352. Its totient is φ = 16636200.

The previous prime is 18344167. The next prime is 18344231. The reversal of 18344227 is 72244381.

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

It is a cyclic number.

It is not a de Polignac number, because 18344227 - 2¹¹ = 18342179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18344237) 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 in 7 ways as a sum of consecutive naturals, for example, 3352 + ... + 6922.

It is an arithmetic number, because the mean of its divisors is an integer number (2507544).

Almost surely, 2^18344227 is an apocalyptic number.

18344227 is a deficient number, since it is larger than the sum of its proper divisors (1716125).

18344227 is a wasteful number, since it uses less digits than its factorization.

18344227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4049.

The product of its digits is 10752, while the sum is 31.

The square root of 18344227 is about 4283.0161101728. The cubic root of 18344227 is about 263.7342127220.

The spelling of 18344227 in words is "eighteen million, three hundred forty-four thousand, two hundred twenty-seven".