166745183 has 4 divisors (see below), whose sum is σ = 181903848. Its totient is φ = 151586520.

The previous prime is 166745179. The next prime is 166745207. The reversal of 166745183 is 381547661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 381547661 = 11 ⋅34686151.

It is a cyclic number.

It is not a de Polignac number, because 166745183 - 2² = 166745179 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 166745183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166745113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7579316 + ... + 7579337.

It is an arithmetic number, because the mean of its divisors is an integer number (45475962).

Almost surely, 2^166745183 is an apocalyptic number.

166745183 is a deficient number, since it is larger than the sum of its proper divisors (15158665).

166745183 is a wasteful number, since it uses less digits than its factorization.

166745183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15158664.

The product of its digits is 120960, while the sum is 41.

The square root of 166745183 is about 12912.9850538131. The cubic root of 166745183 is about 550.4076129890.

The spelling of 166745183 in words is "one hundred sixty-six million, seven hundred forty-five thousand, one hundred eighty-three".