166313163 has 4 divisors (see below), whose sum is σ = 221750888. Its totient is φ = 110875440.

The previous prime is 166313149. The next prime is 166313167. The reversal of 166313163 is 361313661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 361313661 = 3 ⋅120437887.

It is a de Polignac number, because none of the positive numbers 2^k-166313163 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 166313163.

It is not an unprimeable number, because it can be changed into a prime (166313167) 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, 27718858 + ... + 27718863.

It is an arithmetic number, because the mean of its divisors is an integer number (55437722).

Almost surely, 2^166313163 is an apocalyptic number.

166313163 is a deficient number, since it is larger than the sum of its proper divisors (55437725).

166313163 is an equidigital number, since it uses as much as digits as its factorization.

166313163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55437724.

The product of its digits is 5832, while the sum is 30.

The square root of 166313163 is about 12896.2460817092. The cubic root of 166313163 is about 549.9318516114.

The spelling of 166313163 in words is "one hundred sixty-six million, three hundred thirteen thousand, one hundred sixty-three".