166182131 has 2 divisors, whose sum is σ = 166182132. Its totient is φ = 166182130.

The previous prime is 166182101. The next prime is 166182139. The reversal of 166182131 is 131281661.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 166182131 - 2²⁶ = 99073267 is a prime.

It is a super-2 number, since 2×166182131² = 55233001327402322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 166182094 and 166182103.

It is not a weakly prime, because it can be changed into another prime (166182139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83091065 + 83091066.

It is an arithmetic number, because the mean of its divisors is an integer number (83091066).

Almost surely, 2^166182131 is an apocalyptic number.

166182131 is a deficient number, since it is larger than the sum of its proper divisors (1).

166182131 is an equidigital number, since it uses as much as digits as its factorization.

166182131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 29.

The square root of 166182131 is about 12891.1648426354. The cubic root of 166182131 is about 549.7873899996.

The spelling of 166182131 in words is "one hundred sixty-six million, one hundred eighty-two thousand, one hundred thirty-one".