166849994 has 16 divisors (see below), whose sum is σ = 255679200. Its totient is φ = 81636624.

The previous prime is 166849993. The next prime is 166849999. The reversal of 166849994 is 499948661.

It is not an unprimeable number, because it can be changed into a prime (166849993) 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, 23672 + ... + 29900.

It is an arithmetic number, because the mean of its divisors is an integer number (15979950).

Almost surely, 2^166849994 is an apocalyptic number.

166849994 is a deficient number, since it is larger than the sum of its proper divisors (88829206).

166849994 is a wasteful number, since it uses less digits than its factorization.

166849994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6517.

The product of its digits is 3359232, while the sum is 56.

The square root of 166849994 is about 12917.0427730189. The cubic root of 166849994 is about 550.5229120506.

The spelling of 166849994 in words is "one hundred sixty-six million, eight hundred forty-nine thousand, nine hundred ninety-four".