1128707761 has 2 divisors, whose sum is σ = 1128707762. Its totient is φ = 1128707760.

The previous prime is 1128707759. The next prime is 1128707779. The reversal of 1128707761 is 1677078211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1038837361 + 89870400 = 32231^2 + 9480^2 .

It is a cyclic number.

It is not a de Polignac number, because 1128707761 - 2¹ = 1128707759 is a prime.

Together with 1128707759, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1128707161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564353880 + 564353881.

It is an arithmetic number, because the mean of its divisors is an integer number (564353881).

Almost surely, 2^1128707761 is an apocalyptic number.

It is an amenable number.

1128707761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128707761 is an equidigital number, since it uses as much as digits as its factorization.

1128707761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32928, while the sum is 40.

The square root of 1128707761 is about 33596.2462337684. The cubic root of 1128707761 is about 1041.1832443091.

The spelling of 1128707761 in words is "one billion, one hundred twenty-eight million, seven hundred seven thousand, seven hundred sixty-one".