166324143 has 4 divisors (see below), whose sum is σ = 221765528. Its totient is φ = 110882760.

The previous prime is 166324133. The next prime is 166324177. The reversal of 166324143 is 341423661.

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

It is not a de Polignac number, because 166324143 - 2⁶ = 166324079 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 166324143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166324133) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 27720688 + ... + 27720693.

It is an arithmetic number, because the mean of its divisors is an integer number (55441382).

Almost surely, 2^166324143 is an apocalyptic number.

166324143 is a deficient number, since it is larger than the sum of its proper divisors (55441385).

166324143 is an equidigital number, since it uses as much as digits as its factorization.

166324143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55441384.

The product of its digits is 10368, while the sum is 30.

The square root of 166324143 is about 12896.6717799594. The cubic root of 166324143 is about 549.9439535176.

The spelling of 166324143 in words is "one hundred sixty-six million, three hundred twenty-four thousand, one hundred forty-three".