166493174 has 4 divisors (see below), whose sum is σ = 249739764. Its totient is φ = 83246586.

The previous prime is 166493153. The next prime is 166493203. The reversal of 166493174 is 471394661.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41623292 + ... + 41623295.

It is an arithmetic number, because the mean of its divisors is an integer number (62434941).

Almost surely, 2^166493174 is an apocalyptic number.

166493174 is a deficient number, since it is larger than the sum of its proper divisors (83246590).

166493174 is an equidigital number, since it uses as much as digits as its factorization.

166493174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83246589.

The product of its digits is 108864, while the sum is 41.

The square root of 166493174 is about 12903.2233957256. The cubic root of 166493174 is about 550.1301884649.

The spelling of 166493174 in words is "one hundred sixty-six million, four hundred ninety-three thousand, one hundred seventy-four".