812133166 has 32 divisors (see below), whose sum is σ = 1346990400. Its totient is φ = 364849920.

The previous prime is 812133143. The next prime is 812133173. The reversal of 812133166 is 661331218.

It is a super-3 number, since 3×812133166³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

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 in 15 ways as a sum of consecutive naturals, for example, 883255 + ... + 884173.

It is an arithmetic number, because the mean of its divisors is an integer number (42093450).

Almost surely, 2^812133166 is an apocalyptic number.

812133166 is a deficient number, since it is larger than the sum of its proper divisors (534857234).

812133166 is a wasteful number, since it uses less digits than its factorization.

812133166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804.

The product of its digits is 5184, while the sum is 31.

The square root of 812133166 is about 28497.9502069886. The cubic root of 812133166 is about 932.9873360648.

The spelling of 812133166 in words is "eight hundred twelve million, one hundred thirty-three thousand, one hundred sixty-six".