166311049 has 2 divisors, whose sum is σ = 166311050. Its totient is φ = 166311048.

The previous prime is 166311023. The next prime is 166311053. The reversal of 166311049 is 940113661.

166311049 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., 146240649 + 20070400 = 12093^2 + 4480^2 .

It is a cyclic number.

It is not a de Polignac number, because 166311049 - 2²³ = 157922441 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166311049.

It is not a weakly prime, because it can be changed into another prime (166311349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83155524 + 83155525.

It is an arithmetic number, because the mean of its divisors is an integer number (83155525).

Almost surely, 2^166311049 is an apocalyptic number.

It is an amenable number.

166311049 is a deficient number, since it is larger than the sum of its proper divisors (1).

166311049 is an equidigital number, since it uses as much as digits as its factorization.

166311049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 166311049 is about 12896.1641196132. The cubic root of 166311049 is about 549.9295215476.

The spelling of 166311049 in words is "one hundred sixty-six million, three hundred eleven thousand, forty-nine".