18382211 has 2 divisors, whose sum is σ = 18382212. Its totient is φ = 18382210.

The previous prime is 18382193. The next prime is 18382213. The reversal of 18382211 is 11228381.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18382211 is a prime.

Together with 18382213, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18382213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9191105 + 9191106.

It is an arithmetic number, because the mean of its divisors is an integer number (9191106).

Almost surely, 2^18382211 is an apocalyptic number.

18382211 is a deficient number, since it is larger than the sum of its proper divisors (1).

18382211 is an equidigital number, since it uses as much as digits as its factorization.

18382211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 26.

The square root of 18382211 is about 4287.4480754873. The cubic root of 18382211 is about 263.9161187061.

The spelling of 18382211 in words is "eighteen million, three hundred eighty-two thousand, two hundred eleven".