166368841 has 2 divisors, whose sum is σ = 166368842. Its totient is φ = 166368840.

The previous prime is 166368779. The next prime is 166368859. The reversal of 166368841 is 148863661.

It is a happy number.

166368841 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95472441 + 70896400 = 9771^2 + 8420^2 .

It is a cyclic number.

It is not a de Polignac number, because 166368841 - 2¹⁵ = 166336073 is a prime.

It is not a weakly prime, because it can be changed into another prime (166368641) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83184420 + 83184421.

It is an arithmetic number, because the mean of its divisors is an integer number (83184421).

Almost surely, 2^166368841 is an apocalyptic number.

It is an amenable number.

166368841 is a deficient number, since it is larger than the sum of its proper divisors (1).

166368841 is an equidigital number, since it uses as much as digits as its factorization.

166368841 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 43.

The square root of 166368841 is about 12898.4045912663. The cubic root of 166368841 is about 549.9932131394.

The spelling of 166368841 in words is "one hundred sixty-six million, three hundred sixty-eight thousand, eight hundred forty-one".