166249192 has 8 divisors (see below), whose sum is σ = 311717250. Its totient is φ = 83124592.

The previous prime is 166249189. The next prime is 166249207. The reversal of 166249192 is 291942661.

It can be written as a sum of positive squares in only one way, i.e., 89756676 + 76492516 = 9474^2 + 8746^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10390567 + ... + 10390582.

Almost surely, 2^166249192 is an apocalyptic number.

It is an amenable number.

166249192 is a deficient number, since it is larger than the sum of its proper divisors (145468058).

166249192 is a wasteful number, since it uses less digits than its factorization.

166249192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20781155 (or 20781151 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 166249192 is about 12893.7656252935. The cubic root of 166249192 is about 549.8613336373.

The spelling of 166249192 in words is "one hundred sixty-six million, two hundred forty-nine thousand, one hundred ninety-two".