1160816161 has 2 divisors, whose sum is σ = 1160816162. Its totient is φ = 1160816160.

The previous prime is 1160816159. The next prime is 1160816177. The reversal of 1160816161 is 1616180611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1118501136 + 42315025 = 33444^2 + 6505^2 .

It is an emirp because it is prime and its reverse (1616180611) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1919180911 and 1190819191.

It is a cyclic number.

It is not a de Polignac number, because 1160816161 - 2¹ = 1160816159 is a prime.

Together with 1160816159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1160816131) 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, 580408080 + 580408081.

It is an arithmetic number, because the mean of its divisors is an integer number (580408081).

Almost surely, 2^1160816161 is an apocalyptic number.

It is an amenable number.

1160816161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1160816161 is an equidigital number, since it uses as much as digits as its factorization.

1160816161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 31.

The square root of 1160816161 is about 34070.7522810988. The cubic root of 1160816161 is about 1050.9639404938.

Adding to 1160816161 its reverse (1616180611), we get a palindrome (2776996772).

The spelling of 1160816161 in words is "one billion, one hundred sixty million, eight hundred sixteen thousand, one hundred sixty-one".