1115016779 has 2 divisors, whose sum is σ = 1115016780. Its totient is φ = 1115016778.

The previous prime is 1115016769. The next prime is 1115016803. The reversal of 1115016779 is 9776105111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1115016779 - 2¹² = 1115012683 is a prime.

It is not a weakly prime, because it can be changed into another prime (1115016709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 557508389 + 557508390.

It is an arithmetic number, because the mean of its divisors is an integer number (557508390).

Almost surely, 2^1115016779 is an apocalyptic number.

1115016779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1115016779 is an equidigital number, since it uses as much as digits as its factorization.

1115016779 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13230, while the sum is 38.

The square root of 1115016779 is about 33391.8669588869. The cubic root of 1115016779 is about 1036.9563312896.

The spelling of 1115016779 in words is "one billion, one hundred fifteen million, sixteen thousand, seven hundred seventy-nine".