1116160561 has 2 divisors, whose sum is σ = 1116160562. Its totient is φ = 1116160560.

The previous prime is 1116160543. The next prime is 1116160579. The reversal of 1116160561 is 1650616111.

It is a balanced prime because it is at equal distance from previous prime (1116160543) and next prime (1116160579).

It can be written as a sum of positive squares in only one way, i.e., 763472161 + 352688400 = 27631^2 + 18780^2 .

It is a cyclic number.

It is not a de Polignac number, because 1116160561 - 2¹⁷ = 1116029489 is a prime.

It is not a weakly prime, because it can be changed into another prime (1116160061) 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, 558080280 + 558080281.

It is an arithmetic number, because the mean of its divisors is an integer number (558080281).

Almost surely, 2^1116160561 is an apocalyptic number.

It is an amenable number.

1116160561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1116160561 is an equidigital number, since it uses as much as digits as its factorization.

1116160561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1080, while the sum is 28.

The square root of 1116160561 is about 33408.9892244587. The cubic root of 1116160561 is about 1037.3107793690.

Adding to 1116160561 its reverse (1650616111), we get a palindrome (2766776672).

The spelling of 1116160561 in words is "one billion, one hundred sixteen million, one hundred sixty thousand, five hundred sixty-one".