133443166 has 16 divisors (see below), whose sum is σ = 214626240. Its totient is φ = 62000640.

The previous prime is 133443157. The next prime is 133443179. The reversal of 133443166 is 661344331.

It is a happy number.

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 in 7 ways as a sum of consecutive naturals, for example, 22155 + ... + 27526.

It is an arithmetic number, because the mean of its divisors is an integer number (13414140).

Almost surely, 2^133443166 is an apocalyptic number.

133443166 is a deficient number, since it is larger than the sum of its proper divisors (81183074).

133443166 is a wasteful number, since it uses less digits than its factorization.

133443166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49779.

The product of its digits is 15552, while the sum is 31.

The square root of 133443166 is about 11551.7602987597. The cubic root of 133443166 is about 511.0131927768.

Adding to 133443166 its reverse (661344331), we get a palindrome (794787497).

The spelling of 133443166 in words is "one hundred thirty-three million, four hundred forty-three thousand, one hundred sixty-six".