166910413 has 4 divisors (see below), whose sum is σ = 167358268. Its totient is φ = 166462560.

The previous prime is 166910407. The next prime is 166910423. The reversal of 166910413 is 314019661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 314019661 = 2011 ⋅156151.

It can be written as a sum of positive squares in 2 ways, for example, as 123587689 + 43322724 = 11117^2 + 6582^2 .

It is a cyclic number.

It is not a de Polignac number, because 166910413 - 2¹⁷ = 166779341 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 (166910423) 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 3 ways as a sum of consecutive naturals, for example, 223368 + ... + 224113.

It is an arithmetic number, because the mean of its divisors is an integer number (41839567).

Almost surely, 2^166910413 is an apocalyptic number.

It is an amenable number.

166910413 is a deficient number, since it is larger than the sum of its proper divisors (447855).

166910413 is an equidigital number, since it uses as much as digits as its factorization.

166910413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447854.

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

The square root of 166910413 is about 12919.3812932354. The cubic root of 166910413 is about 550.5893550252.

The spelling of 166910413 in words is "one hundred sixty-six million, nine hundred ten thousand, four hundred thirteen".