166464143 has 2 divisors, whose sum is σ = 166464144. Its totient is φ = 166464142.

The previous prime is 166464131. The next prime is 166464167. The reversal of 166464143 is 341464661.

It is a happy number.

166464143 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is an emirp because it is prime and its reverse (341464661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166464143 - 2⁴ = 166464127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166464173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83232071 + 83232072.

It is an arithmetic number, because the mean of its divisors is an integer number (83232072).

Almost surely, 2^166464143 is an apocalyptic number.

166464143 is a deficient number, since it is larger than the sum of its proper divisors (1).

166464143 is an equidigital number, since it uses as much as digits as its factorization.

166464143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 35.

The square root of 166464143 is about 12902.0983952224. The cubic root of 166464143 is about 550.0982116627.

The spelling of 166464143 in words is "one hundred sixty-six million, four hundred sixty-four thousand, one hundred forty-three".