1129766549 has 2 divisors, whose sum is σ = 1129766550. Its totient is φ = 1129766548.

The previous prime is 1129766531. The next prime is 1129766567. The reversal of 1129766549 is 9456679211.

It is a balanced prime because it is at equal distance from previous prime (1129766531) and next prime (1129766567).

It can be written as a sum of positive squares in only one way, i.e., 1128489649 + 1276900 = 33593^2 + 1130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1129766549 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1129766497 and 1129766506.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1129760549) 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, 564883274 + 564883275.

It is an arithmetic number, because the mean of its divisors is an integer number (564883275).

Almost surely, 2^1129766549 is an apocalyptic number.

It is an amenable number.

1129766549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129766549 is an equidigital number, since it uses as much as digits as its factorization.

1129766549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 50.

The square root of 1129766549 is about 33612.0000743782. Note that the first 4 decimals coincide. The cubic root of 1129766549 is about 1041.5087043444.

The spelling of 1129766549 in words is "one billion, one hundred twenty-nine million, seven hundred sixty-six thousand, five hundred forty-nine".