1144085161 has 2 divisors, whose sum is σ = 1144085162. Its totient is φ = 1144085160.

The previous prime is 1144085153. The next prime is 1144085167. The reversal of 1144085161 is 1615804411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 809743936 + 334341225 = 28456^2 + 18285^2 .

It is a cyclic number.

It is not a de Polignac number, because 1144085161 - 2³ = 1144085153 is a prime.

It is not a weakly prime, because it can be changed into another prime (1144085167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572042580 + 572042581.

It is an arithmetic number, because the mean of its divisors is an integer number (572042581).

Almost surely, 2^1144085161 is an apocalyptic number.

It is an amenable number.

1144085161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144085161 is an equidigital number, since it uses as much as digits as its factorization.

1144085161 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 1144085161 is about 33824.3279460213. The cubic root of 1144085161 is about 1045.8902575867.

Adding to 1144085161 its reverse (1615804411), we get a palindrome (2759889572).

The spelling of 1144085161 in words is "one billion, one hundred forty-four million, eighty-five thousand, one hundred sixty-one".