166810194 has 24 divisors (see below), whose sum is σ = 373082112. Its totient is φ = 53809560.

The previous prime is 166810141. The next prime is 166810199. The reversal of 166810194 is 491018661.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (166810199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148914 + ... + 150029.

It is an arithmetic number, because the mean of its divisors is an integer number (15545088).

Almost surely, 2^166810194 is an apocalyptic number.

166810194 is an abundant number, since it is smaller than the sum of its proper divisors (206271918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166810194 is a wasteful number, since it uses less digits than its factorization.

166810194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298982 (or 298979 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 166810194 is about 12915.5020808329. The cubic root of 166810194 is about 550.4791350951.

The spelling of 166810194 in words is "one hundred sixty-six million, eight hundred ten thousand, one hundred ninety-four".