166385135 has 12 divisors (see below), whose sum is σ = 232260408. Its totient is φ = 114092496.

The previous prime is 166385129. The next prime is 166385143. The reversal of 166385135 is 531583661.

It is not a de Polignac number, because 166385135 - 2¹⁴ = 166368751 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339317 + ... + 339806.

It is an arithmetic number, because the mean of its divisors is an integer number (19355034).

Almost surely, 2^166385135 is an apocalyptic number.

166385135 is a deficient number, since it is larger than the sum of its proper divisors (65875273).

166385135 is an equidigital number, since it uses as much as digits as its factorization.

166385135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679142 (or 679135 counting only the distinct ones).

The product of its digits is 64800, while the sum is 38.

The square root of 166385135 is about 12899.0362043061. The cubic root of 166385135 is about 550.0111678173.

The spelling of 166385135 in words is "one hundred sixty-six million, three hundred eighty-five thousand, one hundred thirty-five".