166049982 has 48 divisors (see below), whose sum is σ = 435363552. Its totient is φ = 44651520.

The previous prime is 166049971. The next prime is 166050023. The reversal of 166049982 is 289940661.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

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 in 23 ways as a sum of consecutive naturals, for example, 36619 + ... + 40902.

It is an arithmetic number, because the mean of its divisors is an integer number (9070074).

Almost surely, 2^166049982 is an apocalyptic number.

166049982 is an abundant number, since it is smaller than the sum of its proper divisors (269313570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166049982 is a wasteful number, since it uses less digits than its factorization.

166049982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77553 (or 77550 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 166049982 is about 12886.0382585184. The cubic root of 166049982 is about 549.6416199738.

The spelling of 166049982 in words is "one hundred sixty-six million, forty-nine thousand, nine hundred eighty-two".