216160289 has 2 divisors, whose sum is σ = 216160290. Its totient is φ = 216160288.

The previous prime is 216160277. The next prime is 216160309. The reversal of 216160289 is 982061612.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196224064 + 19936225 = 14008^2 + 4465^2 .

It is a cyclic number.

It is not a de Polignac number, because 216160289 - 2²⁰ = 215111713 is a prime.

It is not a weakly prime, because it can be changed into another prime (216160249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108080144 + 108080145.

It is an arithmetic number, because the mean of its divisors is an integer number (108080145).

Almost surely, 2^216160289 is an apocalyptic number.

It is an amenable number.

216160289 is a deficient number, since it is larger than the sum of its proper divisors (1).

216160289 is an equidigital number, since it uses as much as digits as its factorization.

216160289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 216160289 is about 14702.3905879282. The cubic root of 216160289 is about 600.1483790438.

The spelling of 216160289 in words is "two hundred sixteen million, one hundred sixty thousand, two hundred eighty-nine".