18382841 has 2 divisors, whose sum is σ = 18382842. Its totient is φ = 18382840.

The previous prime is 18382829. The next prime is 18382843. The reversal of 18382841 is 14828381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16933225 + 1449616 = 4115^2 + 1204^2 .

It is a cyclic number.

It is not a de Polignac number, because 18382841 - 2¹⁴ = 18366457 is a prime.

It is a Sophie Germain prime.

Together with 18382843, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (18382843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9191420 + 9191421.

It is an arithmetic number, because the mean of its divisors is an integer number (9191421).

Almost surely, 2^18382841 is an apocalyptic number.

It is an amenable number.

18382841 is a deficient number, since it is larger than the sum of its proper divisors (1).

18382841 is an equidigital number, since it uses as much as digits as its factorization.

18382841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12288, while the sum is 35.

The square root of 18382841 is about 4287.5215451354. The cubic root of 18382841 is about 263.9191336727.

The spelling of 18382841 in words is "eighteen million, three hundred eighty-two thousand, eight hundred forty-one".