1982166 has 16 divisors (see below), whose sum is σ = 4197744. Its totient is φ = 621824.

The previous prime is 1982159. The next prime is 1982173. The reversal of 1982166 is 6612891.

It is an interprime number because it is at equal distance from previous prime (1982159) and next prime (1982173).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9615 + ... + 9818.

It is an arithmetic number, because the mean of its divisors is an integer number (262359).

2^1982166 is an apocalyptic number.

1982166 is an abundant number, since it is smaller than the sum of its proper divisors (2215578).

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

1982166 is a wasteful number, since it uses less digits than its factorization.

1982166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19455.

The product of its digits is 5184, while the sum is 33.

The square root of 1982166 is about 1407.8941721593. The cubic root of 1982166 is about 125.6164957982.

The spelling of 1982166 in words is "one million, nine hundred eighty-two thousand, one hundred sixty-six".