166382169 has 4 divisors (see below), whose sum is σ = 221842896. Its totient is φ = 110921444.

The previous prime is 166382143. The next prime is 166382171. The reversal of 166382169 is 961283661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 166382169 - 2¹¹ = 166380121 is a prime.

It is a super-2 number, since 2×166382169² = 55366052322289122, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 166382169.

It is not an unprimeable number, because it can be changed into a prime (166382119) 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, 27730359 + ... + 27730364.

It is an arithmetic number, because the mean of its divisors is an integer number (55460724).

Almost surely, 2^166382169 is an apocalyptic number.

It is an amenable number.

166382169 is a deficient number, since it is larger than the sum of its proper divisors (55460727).

166382169 is an equidigital number, since it uses as much as digits as its factorization.

166382169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55460726.

The product of its digits is 93312, while the sum is 42.

The square root of 166382169 is about 12898.9212339637. The cubic root of 166382169 is about 550.0078996111.

The spelling of 166382169 in words is "one hundred sixty-six million, three hundred eighty-two thousand, one hundred sixty-nine".