18118327 has 2 divisors, whose sum is σ = 18118328. Its totient is φ = 18118326.

The previous prime is 18118297. The next prime is 18118337. The reversal of 18118327 is 72381181.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (72381181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18118327 - 2¹⁵ = 18085559 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18118337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9059163 + 9059164.

It is an arithmetic number, because the mean of its divisors is an integer number (9059164).

Almost surely, 2^18118327 is an apocalyptic number.

18118327 is a deficient number, since it is larger than the sum of its proper divisors (1).

18118327 is an equidigital number, since it uses as much as digits as its factorization.

18118327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 31.

The square root of 18118327 is about 4256.5628152301. The cubic root of 18118327 is about 262.6471531694.

The spelling of 18118327 in words is "eighteen million, one hundred eighteen thousand, three hundred twenty-seven".