166508249 has 8 divisors (see below), whose sum is σ = 168067200. Its totient is φ = 164956176.

The previous prime is 166508233. The next prime is 166508281. The reversal of 166508249 is 942805661.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 166508249 - 2⁴ = 166508233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (166508219) 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 in 7 ways as a sum of consecutive naturals, for example, 55424 + ... + 58350.

It is an arithmetic number, because the mean of its divisors is an integer number (21008400).

Almost surely, 2^166508249 is an apocalyptic number.

It is an amenable number.

166508249 is a deficient number, since it is larger than the sum of its proper divisors (1558951).

166508249 is a wasteful number, since it uses less digits than its factorization.

166508249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3439.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 166508249 is about 12903.8075388623. The cubic root of 166508249 is about 550.1467916727.

The spelling of 166508249 in words is "one hundred sixty-six million, five hundred eight thousand, two hundred forty-nine".