166449529 has 2 divisors, whose sum is σ = 166449530. Its totient is φ = 166449528.

The previous prime is 166449527. The next prime is 166449553. The reversal of 166449529 is 925944661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158760000 + 7689529 = 12600^2 + 2773^2 .

It is a cyclic number.

It is not a de Polignac number, because 166449529 - 2¹ = 166449527 is a prime.

Together with 166449527, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (166449523) 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, 83224764 + 83224765.

It is an arithmetic number, because the mean of its divisors is an integer number (83224765).

Almost surely, 2^166449529 is an apocalyptic number.

It is an amenable number.

166449529 is a deficient number, since it is larger than the sum of its proper divisors (1).

166449529 is an equidigital number, since it uses as much as digits as its factorization.

166449529 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 46.

The square root of 166449529 is about 12901.5320408082. The cubic root of 166449529 is about 550.0821133599.

The spelling of 166449529 in words is "one hundred sixty-six million, four hundred forty-nine thousand, five hundred twenty-nine".