160866281 has 2 divisors, whose sum is σ = 160866282. Its totient is φ = 160866280.

The previous prime is 160866253. The next prime is 160866283. The reversal of 160866281 is 182668061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 134189056 + 26677225 = 11584^2 + 5165^2 .

It is an emirp because it is prime and its reverse (182668061) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-160866281 is a prime.

It is a super-2 number, since 2×160866281² = 51755920725541922, which contains 22 as substring.

Together with 160866283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (160866283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80433140 + 80433141.

It is an arithmetic number, because the mean of its divisors is an integer number (80433141).

Almost surely, 2^160866281 is an apocalyptic number.

It is an amenable number.

160866281 is a deficient number, since it is larger than the sum of its proper divisors (1).

160866281 is an equidigital number, since it uses as much as digits as its factorization.

160866281 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 160866281 is about 12683.3071791233. The cubic root of 160866281 is about 543.8615305461.

The spelling of 160866281 in words is "one hundred sixty million, eight hundred sixty-six thousand, two hundred eighty-one".