1091794679 has 2 divisors, whose sum is σ = 1091794680. Its totient is φ = 1091794678.

The previous prime is 1091794661. The next prime is 1091794687. The reversal of 1091794679 is 9764971901.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1091794679 - 2¹⁶ = 1091729143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1091794679.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1091794609) 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, 545897339 + 545897340.

It is an arithmetic number, because the mean of its divisors is an integer number (545897340).

Almost surely, 2^1091794679 is an apocalyptic number.

1091794679 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091794679 is an equidigital number, since it uses as much as digits as its factorization.

1091794679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 857304, while the sum is 53.

The square root of 1091794679 is about 33042.3164896168. The cubic root of 1091794679 is about 1029.7069826626.

The spelling of 1091794679 in words is "one billion, ninety-one million, seven hundred ninety-four thousand, six hundred seventy-nine".