1113768779 has 2 divisors, whose sum is σ = 1113768780. Its totient is φ = 1113768778.

The previous prime is 1113768769. The next prime is 1113768797. The reversal of 1113768779 is 9778673111.

Together with next prime (1113768797) 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 not a de Polignac number, because 1113768779 - 2²⁸ = 845333323 is a prime.

It is not a weakly prime, because it can be changed into another prime (1113768749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556884389 + 556884390.

It is an arithmetic number, because the mean of its divisors is an integer number (556884390).

Almost surely, 2^1113768779 is an apocalyptic number.

1113768779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113768779 is an equidigital number, since it uses as much as digits as its factorization.

1113768779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 444528, while the sum is 50.

The square root of 1113768779 is about 33373.1745418382. The cubic root of 1113768779 is about 1036.5693103202.

The spelling of 1113768779 in words is "one billion, one hundred thirteen million, seven hundred sixty-eight thousand, seven hundred seventy-nine".