1979166 has 16 divisors (see below), whose sum is σ = 4523904. Its totient is φ = 565464.

The previous prime is 1979149. The next prime is 1979171. The reversal of 1979166 is 6619791.

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, 23520 + ... + 23603.

It is an arithmetic number, because the mean of its divisors is an integer number (282744).

2^1979166 is an apocalyptic number.

1979166 is an abundant number, since it is smaller than the sum of its proper divisors (2544738).

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

1979166 is a wasteful number, since it uses less digits than its factorization.

1979166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47135.

The product of its digits is 20412, while the sum is 39.

The square root of 1979166 is about 1406.8283477383. The cubic root of 1979166 is about 125.5530904515.

It can be divided in two parts, 1979 and 166, that added together give a triangular number (2145 = T₆₅).

The spelling of 1979166 in words is "one million, nine hundred seventy-nine thousand, one hundred sixty-six".