18382159 has 2 divisors, whose sum is σ = 18382160. Its totient is φ = 18382158.

The previous prime is 18382157. The next prime is 18382171. The reversal of 18382159 is 95128381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18382159 - 2¹ = 18382157 is a prime.

Together with 18382157, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18382157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9191079 + 9191080.

It is an arithmetic number, because the mean of its divisors is an integer number (9191080).

Almost surely, 2^18382159 is an apocalyptic number.

18382159 is a deficient number, since it is larger than the sum of its proper divisors (1).

18382159 is an equidigital number, since it uses as much as digits as its factorization.

18382159 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17280, while the sum is 37.

The square root of 18382159 is about 4287.4420112697. The cubic root of 18382159 is about 263.9158698486.

The spelling of 18382159 in words is "eighteen million, three hundred eighty-two thousand, one hundred fifty-nine".