1128768149 has 2 divisors, whose sum is σ = 1128768150. Its totient is φ = 1128768148.

The previous prime is 1128768133. The next prime is 1128768161. The reversal of 1128768149 is 9418678211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 608608900 + 520159249 = 24670^2 + 22807^2 .

It is an emirp because it is prime and its reverse (9418678211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1128768149 - 2⁴ = 1128768133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128768649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564384074 + 564384075.

It is an arithmetic number, because the mean of its divisors is an integer number (564384075).

Almost surely, 2^1128768149 is an apocalyptic number.

It is an amenable number.

1128768149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128768149 is an equidigital number, since it uses as much as digits as its factorization.

1128768149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 193536, while the sum is 47.

The square root of 1128768149 is about 33597.1449531058. The cubic root of 1128768149 is about 1041.2018124022.

The spelling of 1128768149 in words is "one billion, one hundred twenty-eight million, seven hundred sixty-eight thousand, one hundred forty-nine".