166980182 has 4 divisors (see below), whose sum is σ = 250470276. Its totient is φ = 83490090.

The previous prime is 166980139. The next prime is 166980251. The reversal of 166980182 is 281089661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 281089661 = 11311 ⋅24851.

It is a congruent number.

It is an unprimeable number.

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, 41745044 + ... + 41745047.

It is an arithmetic number, because the mean of its divisors is an integer number (62617569).

Almost surely, 2^166980182 is an apocalyptic number.

166980182 is a deficient number, since it is larger than the sum of its proper divisors (83490094).

166980182 is an equidigital number, since it uses as much as digits as its factorization.

166980182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83490093.

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 166980182 is about 12922.0811791290. The cubic root of 166980182 is about 550.6660602806. Note that the first 3 decimals are identical.

The spelling of 166980182 in words is "one hundred sixty-six million, nine hundred eighty thousand, one hundred eighty-two".