166944170 has 16 divisors (see below), whose sum is σ = 306170280. Its totient is φ = 65517504.

The previous prime is 166944161. The next prime is 166944179. The reversal of 166944170 is 71449661.

It is a happy number.

166944170 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (166944161) and next prime (166944179).

It can be written as a sum of positive squares in 4 ways, for example, as 111872929 + 55071241 = 10577^2 + 7421^2 .

It is not an unprimeable number, because it can be changed into a prime (166944179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156965 + ... + 158024.

Almost surely, 2^166944170 is an apocalyptic number.

166944170 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

166944170 is a deficient number, since it is larger than the sum of its proper divisors (139226110).

166944170 is a wasteful number, since it uses less digits than its factorization.

166944170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315049.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 166944170 is about 12920.6876751975. The cubic root of 166944170 is about 550.6264707283.

The spelling of 166944170 in words is "one hundred sixty-six million, nine hundred forty-four thousand, one hundred seventy".