82131166 has 8 divisors (see below), whose sum is σ = 132673464. Its totient is φ = 37906680.

The previous prime is 82131151. The next prime is 82131187. The reversal of 82131166 is 66113128.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1579420 + ... + 1579471.

It is an arithmetic number, because the mean of its divisors is an integer number (16584183).

Almost surely, 2^82131166 is an apocalyptic number.

82131166 is a deficient number, since it is larger than the sum of its proper divisors (50542298).

82131166 is a wasteful number, since it uses less digits than its factorization.

82131166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3158906.

The product of its digits is 1728, while the sum is 28.

The square root of 82131166 is about 9062.6246750045. The cubic root of 82131166 is about 434.6796708077.

The spelling of 82131166 in words is "eighty-two million, one hundred thirty-one thousand, one hundred sixty-six".