166445018 has 32 divisors (see below), whose sum is σ = 265118400. Its totient is φ = 78274944.

The previous prime is 166445009. The next prime is 166445033. The reversal of 166445018 is 810544661.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 292238 + ... + 292806.

It is an arithmetic number, because the mean of its divisors is an integer number (8284950).

Almost surely, 2^166445018 is an apocalyptic number.

166445018 is a deficient number, since it is larger than the sum of its proper divisors (98673382).

166445018 is a wasteful number, since it uses less digits than its factorization.

166445018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 166445018 is about 12901.3572154251. The cubic root of 166445018 is about 550.0771440001.

Adding to 166445018 its reverse (810544661), we get a palindrome (976989679).

The spelling of 166445018 in words is "one hundred sixty-six million, four hundred forty-five thousand, eighteen".