166001149 has 2 divisors, whose sum is σ = 166001150. Its totient is φ = 166001148.

The previous prime is 166001131. The next prime is 166001177. The reversal of 166001149 is 941100661.

It is an a-pointer prime, because the next prime (166001177) can be obtained adding 166001149 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 165945924 + 55225 = 12882^2 + 235^2 .

It is a cyclic number.

It is not a de Polignac number, because 166001149 - 2⁷ = 166001021 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166001449) 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, 83000574 + 83000575.

It is an arithmetic number, because the mean of its divisors is an integer number (83000575).

Almost surely, 2^166001149 is an apocalyptic number.

It is an amenable number.

166001149 is a deficient number, since it is larger than the sum of its proper divisors (1).

166001149 is an equidigital number, since it uses as much as digits as its factorization.

166001149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 166001149 is about 12884.1433164957. The cubic root of 166001149 is about 549.5877340284.

The spelling of 166001149 in words is "one hundred sixty-six million, one thousand, one hundred forty-nine".