166264313 has 2 divisors, whose sum is σ = 166264314. Its totient is φ = 166264312.

The previous prime is 166264303. The next prime is 166264361. The reversal of 166264313 is 313462661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120187369 + 46076944 = 10963^2 + 6788^2 .

It is an emirp because it is prime and its reverse (313462661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 166264313 - 2⁴ = 166264297 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 166264313.

It is not a weakly prime, because it can be changed into another prime (166264303) 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, 83132156 + 83132157.

It is an arithmetic number, because the mean of its divisors is an integer number (83132157).

Almost surely, 2^166264313 is an apocalyptic number.

It is an amenable number.

166264313 is a deficient number, since it is larger than the sum of its proper divisors (1).

166264313 is an equidigital number, since it uses as much as digits as its factorization.

166264313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 32.

The square root of 166264313 is about 12894.3519806154. The cubic root of 166264313 is about 549.8780037959.

The spelling of 166264313 in words is "one hundred sixty-six million, two hundred sixty-four thousand, three hundred thirteen".