1127965649 has 2 divisors, whose sum is σ = 1127965650. Its totient is φ = 1127965648.

The previous prime is 1127965633. The next prime is 1127965651. The reversal of 1127965649 is 9465697211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 970011025 + 157954624 = 31145^2 + 12568^2 .

It is a cyclic number.

It is not a de Polignac number, because 1127965649 - 2⁴ = 1127965633 is a prime.

Together with 1127965651, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1127965597 and 1127965606.

It is not a weakly prime, because it can be changed into another prime (1127965849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563982824 + 563982825.

It is an arithmetic number, because the mean of its divisors is an integer number (563982825).

Almost surely, 2^1127965649 is an apocalyptic number.

It is an amenable number.

1127965649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1127965649 is an equidigital number, since it uses as much as digits as its factorization.

1127965649 is an evil number, because the sum of its binary digits is even.

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

The square root of 1127965649 is about 33585.1998505294. The cubic root of 1127965649 is about 1040.9550057251.

The spelling of 1127965649 in words is "one billion, one hundred twenty-seven million, nine hundred sixty-five thousand, six hundred forty-nine".