166443045 has 16 divisors (see below), whose sum is σ = 267224832. Its totient is φ = 88464320.

The previous prime is 166443041. The next prime is 166443047. The reversal of 166443045 is 540344661.

It is not a de Polignac number, because 166443045 - 2² = 166443041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166442997 and 166443015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166443041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14541 + ... + 23330.

It is an arithmetic number, because the mean of its divisors is an integer number (16701552).

Almost surely, 2^166443045 is an apocalyptic number.

166443045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

166443045 is a deficient number, since it is larger than the sum of its proper divisors (100781787).

166443045 is a wasteful number, since it uses less digits than its factorization.

166443045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38172.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 166443045 is about 12901.2807503751. The cubic root of 166443045 is about 550.0749704966.

It can be divided in two parts, 166 and 443045, that added together give a triangular number (443211 = T₉₄₁).

The spelling of 166443045 in words is "one hundred sixty-six million, four hundred forty-three thousand, forty-five".