1128319919 has 2 divisors, whose sum is σ = 1128319920. Its totient is φ = 1128319918.

The previous prime is 1128319909. The next prime is 1128319939. The reversal of 1128319919 is 9199138211.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1128319919 - 2¹⁶ = 1128254383 is a prime.

It is a super-2 number, since 2×1128319919² = 2546211679224333122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1128319919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128319909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564159959 + 564159960.

It is an arithmetic number, because the mean of its divisors is an integer number (564159960).

Almost surely, 2^1128319919 is an apocalyptic number.

1128319919 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128319919 is an equidigital number, since it uses as much as digits as its factorization.

1128319919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 44.

The square root of 1128319919 is about 33590.4736346483. The cubic root of 1128319919 is about 1041.0639749206.

The spelling of 1128319919 in words is "one billion, one hundred twenty-eight million, three hundred nineteen thousand, nine hundred nineteen".