18445327 has 4 divisors (see below), whose sum is σ = 18628056. Its totient is φ = 18262600.

The previous prime is 18445319. The next prime is 18445331. The reversal of 18445327 is 72354481.

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

It is a cyclic number.

It is not a de Polignac number, because 18445327 - 2³ = 18445319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18445292 and 18445301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18445337) 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, 91213 + ... + 91414.

It is an arithmetic number, because the mean of its divisors is an integer number (4657014).

Almost surely, 2^18445327 is an apocalyptic number.

18445327 is a deficient number, since it is larger than the sum of its proper divisors (182729).

18445327 is a wasteful number, since it uses less digits than its factorization.

18445327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182728.

The product of its digits is 26880, while the sum is 34.

The square root of 18445327 is about 4294.8023237397. The cubic root of 18445327 is about 264.2178289032.

The spelling of 18445327 in words is "eighteen million, four hundred forty-five thousand, three hundred twenty-seven".