1128577993 has 2 divisors, whose sum is σ = 1128577994. Its totient is φ = 1128577992.

The previous prime is 1128577937. The next prime is 1128578027. The reversal of 1128577993 is 3997758211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1054755529 + 73822464 = 32477^2 + 8592^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1128577993 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1128577993.

It is not a weakly prime, because it can be changed into another prime (1128577493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564288996 + 564288997.

It is an arithmetic number, because the mean of its divisors is an integer number (564288997).

Almost surely, 2^1128577993 is an apocalyptic number.

It is an amenable number.

1128577993 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128577993 is an equidigital number, since it uses as much as digits as its factorization.

1128577993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 952560, while the sum is 52.

The square root of 1128577993 is about 33594.3148910645. The cubic root of 1128577993 is about 1041.1433410231.

It can be divided in two parts, 1128 and 577993, that added together give a square (579121 = 761²).

The spelling of 1128577993 in words is "one billion, one hundred twenty-eight million, five hundred seventy-seven thousand, nine hundred ninety-three".