168099149 has 2 divisors, whose sum is σ = 168099150. Its totient is φ = 168099148.

The previous prime is 168099133. The next prime is 168099161. The reversal of 168099149 is 941990861.

168099149 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146773225 + 21325924 = 12115^2 + 4618^2 .

It is a cyclic number.

It is not a de Polignac number, because 168099149 - 2⁴ = 168099133 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168099749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84049574 + 84049575.

It is an arithmetic number, because the mean of its divisors is an integer number (84049575).

Almost surely, 2^168099149 is an apocalyptic number.

It is an amenable number.

168099149 is a deficient number, since it is larger than the sum of its proper divisors (1).

168099149 is an equidigital number, since it uses as much as digits as its factorization.

168099149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 47.

The square root of 168099149 is about 12965.3055883770. The cubic root of 168099149 is about 551.8933633627.

The spelling of 168099149 in words is "one hundred sixty-eight million, ninety-nine thousand, one hundred forty-nine".