166982871 has 8 divisors (see below), whose sum is σ = 242884224. Its totient is φ = 101201720.

The previous prime is 166982843. The next prime is 166982903. The reversal of 166982871 is 178289661.

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 166982871 - 2⁷ = 166982743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166982871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166982821) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2530011 + ... + 2530076.

It is an arithmetic number, because the mean of its divisors is an integer number (30360528).

Almost surely, 2^166982871 is an apocalyptic number.

166982871 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

166982871 is a deficient number, since it is larger than the sum of its proper divisors (75901353).

166982871 is a wasteful number, since it uses less digits than its factorization.

166982871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5060101.

The product of its digits is 290304, while the sum is 48.

The square root of 166982871 is about 12922.1852254176. The cubic root of 166982871 is about 550.6690161864.

The spelling of 166982871 in words is "one hundred sixty-six million, nine hundred eighty-two thousand, eight hundred seventy-one".