166846249 has 2 divisors, whose sum is σ = 166846250. Its totient is φ = 166846248.

The previous prime is 166846223. The next prime is 166846259. The reversal of 166846249 is 942648661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117397225 + 49449024 = 10835^2 + 7032^2 .

It is a cyclic number.

It is not a de Polignac number, because 166846249 - 2²³ = 158457641 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166846199 and 166846208.

It is not a weakly prime, because it can be changed into another prime (166846259) by changing a digit.

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 as a sum of consecutive naturals, namely, 83423124 + 83423125.

It is an arithmetic number, because the mean of its divisors is an integer number (83423125).

Almost surely, 2^166846249 is an apocalyptic number.

It is an amenable number.

166846249 is a deficient number, since it is larger than the sum of its proper divisors (1).

166846249 is an equidigital number, since it uses as much as digits as its factorization.

166846249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 46.

The square root of 166846249 is about 12916.8978086846. The cubic root of 166846249 is about 550.5187931338.

The spelling of 166846249 in words is "one hundred sixty-six million, eight hundred forty-six thousand, two hundred forty-nine".