1128057649 has 2 divisors, whose sum is σ = 1128057650. Its totient is φ = 1128057648.

The previous prime is 1128057613. The next prime is 1128057673. The reversal of 1128057649 is 9467508211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 920697649 + 207360000 = 30343^2 + 14400^2 .

It is a cyclic number.

It is not a de Polignac number, because 1128057649 - 2⁹ = 1128057137 is a prime.

It is not a weakly prime, because it can be changed into another prime (1128057449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564028824 + 564028825.

It is an arithmetic number, because the mean of its divisors is an integer number (564028825).

Almost surely, 2^1128057649 is an apocalyptic number.

It is an amenable number.

1128057649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128057649 is an equidigital number, since it uses as much as digits as its factorization.

1128057649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 1128057649 is about 33586.5694735262. The cubic root of 1128057649 is about 1040.9833060128.

The spelling of 1128057649 in words is "one billion, one hundred twenty-eight million, fifty-seven thousand, six hundred forty-nine".