166145444 has 12 divisors (see below), whose sum is σ = 290935344. Its totient is φ = 83021064.

The previous prime is 166145417. The next prime is 166145477. The reversal of 166145444 is 444541661.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5162 + ... + 18945.

It is an arithmetic number, because the mean of its divisors is an integer number (24244612).

Almost surely, 2^166145444 is an apocalyptic number.

It is an amenable number.

166145444 is a deficient number, since it is larger than the sum of its proper divisors (124789900).

166145444 is a wasteful number, since it uses less digits than its factorization.

166145444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25834 (or 25832 counting only the distinct ones).

The product of its digits is 46080, while the sum is 35.

The square root of 166145444 is about 12889.7418127750. The cubic root of 166145444 is about 549.7469293028.

The spelling of 166145444 in words is "one hundred sixty-six million, one hundred forty-five thousand, four hundred forty-four".