166188849 has 8 divisors (see below), whose sum is σ = 221668320. Its totient is φ = 110750976.

The previous prime is 166188829. The next prime is 166188871. The reversal of 166188849 is 948881661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 166188849 - 2¹³ = 166180657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (166188829) 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 7 ways as a sum of consecutive naturals, for example, 582 + ... + 18240.

It is an arithmetic number, because the mean of its divisors is an integer number (27708540).

Almost surely, 2^166188849 is an apocalyptic number.

It is an amenable number.

166188849 is a deficient number, since it is larger than the sum of its proper divisors (55479471).

166188849 is a wasteful number, since it uses less digits than its factorization.

166188849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20799.

The product of its digits is 663552, while the sum is 51.

The square root of 166188849 is about 12891.4254060596. The cubic root of 166188849 is about 549.7947983812.

The spelling of 166188849 in words is "one hundred sixty-six million, one hundred eighty-eight thousand, eight hundred forty-nine".