133183166 has 4 divisors (see below), whose sum is σ = 199774752. Its totient is φ = 66591582.

The previous prime is 133183159. The next prime is 133183181. The reversal of 133183166 is 661381331.

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

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 33295790 + ... + 33295793.

It is an arithmetic number, because the mean of its divisors is an integer number (49943688).

Almost surely, 2^133183166 is an apocalyptic number.

133183166 is a deficient number, since it is larger than the sum of its proper divisors (66591586).

133183166 is an equidigital number, since it uses as much as digits as its factorization.

133183166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66591585.

The product of its digits is 7776, while the sum is 32.

The square root of 133183166 is about 11540.5011156362. The cubic root of 133183166 is about 510.6810918088.

The spelling of 133183166 in words is "one hundred thirty-three million, one hundred eighty-three thousand, one hundred sixty-six".