166490311 has 8 divisors (see below), whose sum is σ = 179711840. Its totient is φ = 153328032.

The previous prime is 166490279. The next prime is 166490323. The reversal of 166490311 is 113094661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166490311 - 2⁵ = 166490279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166490351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8880 + ... + 20293.

It is an arithmetic number, because the mean of its divisors is an integer number (22463980).

Almost surely, 2^166490311 is an apocalyptic number.

166490311 is a deficient number, since it is larger than the sum of its proper divisors (13221529).

166490311 is a wasteful number, since it uses less digits than its factorization.

166490311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29625.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 166490311 is about 12903.1124539779. The cubic root of 166490311 is about 550.1270351189.

The spelling of 166490311 in words is "one hundred sixty-six million, four hundred ninety thousand, three hundred eleven".