1128245719 has 2 divisors, whose sum is σ = 1128245720. Its totient is φ = 1128245718.

The previous prime is 1128245693. The next prime is 1128245759. The reversal of 1128245719 is 9175428211.

It is an a-pointer prime, because the next prime (1128245759) can be obtained adding 1128245719 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1128245719 - 2⁵ = 1128245687 is a prime.

It is a super-2 number, since 2×1128245719² = 2545876804883653922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128245759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564122859 + 564122860.

It is an arithmetic number, because the mean of its divisors is an integer number (564122860).

Almost surely, 2^1128245719 is an apocalyptic number.

1128245719 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128245719 is an equidigital number, since it uses as much as digits as its factorization.

1128245719 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 40.

The square root of 1128245719 is about 33589.3691366778. The cubic root of 1128245719 is about 1041.0411537807.

The spelling of 1128245719 in words is "one billion, one hundred twenty-eight million, two hundred forty-five thousand, seven hundred nineteen".