1126928879 has 2 divisors, whose sum is σ = 1126928880. Its totient is φ = 1126928878.

The previous prime is 1126928867. The next prime is 1126928897. The reversal of 1126928879 is 9788296211.

Together with next prime (1126928897) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1126928879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1126928879.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1126928899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 563464439 + 563464440.

It is an arithmetic number, because the mean of its divisors is an integer number (563464440).

Almost surely, 2^1126928879 is an apocalyptic number.

1126928879 is a deficient number, since it is larger than the sum of its proper divisors (1).

1126928879 is an equidigital number, since it uses as much as digits as its factorization.

1126928879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 53.

The square root of 1126928879 is about 33569.7613783595. The cubic root of 1126928879 is about 1040.6359765804.

The spelling of 1126928879 in words is "one billion, one hundred twenty-six million, nine hundred twenty-eight thousand, eight hundred seventy-nine".