166182139 has 2 divisors, whose sum is σ = 166182140. Its totient is φ = 166182138.

The previous prime is 166182131. The next prime is 166182161. The reversal of 166182139 is 931281661.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 166182139 - 2³ = 166182131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166182098 and 166182107.

It is not a weakly prime, because it can be changed into another prime (166182131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83091069 + 83091070.

It is an arithmetic number, because the mean of its divisors is an integer number (83091070).

Almost surely, 2^166182139 is an apocalyptic number.

166182139 is a deficient number, since it is larger than the sum of its proper divisors (1).

166182139 is an equidigital number, since it uses as much as digits as its factorization.

166182139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 37.

The square root of 166182139 is about 12891.1651529255. The cubic root of 166182139 is about 549.7873988218.

The spelling of 166182139 in words is "one hundred sixty-six million, one hundred eighty-two thousand, one hundred thirty-nine".