165818327 has 2 divisors, whose sum is σ = 165818328. Its totient is φ = 165818326.

The previous prime is 165818311. The next prime is 165818333. The reversal of 165818327 is 723818561.

It is a strong prime.

It is an emirp because it is prime and its reverse (723818561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165818327 - 2⁴ = 165818311 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (165815327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82909163 + 82909164.

It is an arithmetic number, because the mean of its divisors is an integer number (82909164).

Almost surely, 2^165818327 is an apocalyptic number.

165818327 is a deficient number, since it is larger than the sum of its proper divisors (1).

165818327 is an equidigital number, since it uses as much as digits as its factorization.

165818327 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 41.

The square root of 165818327 is about 12877.0465169619. The cubic root of 165818327 is about 549.3859008123.

The spelling of 165818327 in words is "one hundred sixty-five million, eight hundred eighteen thousand, three hundred twenty-seven".