1144613161 has 2 divisors, whose sum is σ = 1144613162. Its totient is φ = 1144613160.

The previous prime is 1144613021. The next prime is 1144613189. The reversal of 1144613161 is 1613164411.

It is an a-pointer prime, because the next prime (1144613189) can be obtained adding 1144613161 to its sum of digits (28).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 781482025 + 363131136 = 27955^2 + 19056^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1144613161 is a prime.

It is not a weakly prime, because it can be changed into another prime (1144613191) 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, 572306580 + 572306581.

It is an arithmetic number, because the mean of its divisors is an integer number (572306581).

Almost surely, 2^1144613161 is an apocalyptic number.

It is an amenable number.

1144613161 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144613161 is an equidigital number, since it uses as much as digits as its factorization.

1144613161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 28.

The square root of 1144613161 is about 33832.1320788389. The cubic root of 1144613161 is about 1046.0511270582.

Adding to 1144613161 its reverse (1613164411), we get a palindrome (2757777572).

The spelling of 1144613161 in words is "one billion, one hundred forty-four million, six hundred thirteen thousand, one hundred sixty-one".