166360289 has 2 divisors, whose sum is σ = 166360290. Its totient is φ = 166360288.

The previous prime is 166360277. The next prime is 166360297. The reversal of 166360289 is 982063661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 164352400 + 2007889 = 12820^2 + 1417^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-166360289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (166360489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83180144 + 83180145.

It is an arithmetic number, because the mean of its divisors is an integer number (83180145).

Almost surely, 2^166360289 is an apocalyptic number.

It is an amenable number.

166360289 is a deficient number, since it is larger than the sum of its proper divisors (1).

166360289 is an equidigital number, since it uses as much as digits as its factorization.

166360289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 166360289 is about 12898.0730731377. The cubic root of 166360289 is about 549.9837890539.

The spelling of 166360289 in words is "one hundred sixty-six million, three hundred sixty thousand, two hundred eighty-nine".