1111712779 has 2 divisors, whose sum is σ = 1111712780. Its totient is φ = 1111712778.

The previous prime is 1111712753. The next prime is 1111712803. The reversal of 1111712779 is 9772171111.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1111712779 - 2⁵ = 1111712747 is a prime.

It is not a weakly prime, because it can be changed into another prime (1111712179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555856389 + 555856390.

It is an arithmetic number, because the mean of its divisors is an integer number (555856390).

Almost surely, 2^1111712779 is an apocalyptic number.

1111712779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111712779 is an equidigital number, since it uses as much as digits as its factorization.

1111712779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6174, while the sum is 37.

The square root of 1111712779 is about 33342.3571302330. The cubic root of 1111712779 is about 1035.9310871187.

The spelling of 1111712779 in words is "one billion, one hundred eleven million, seven hundred twelve thousand, seven hundred seventy-nine".