1091794727 has 2 divisors, whose sum is σ = 1091794728. Its totient is φ = 1091794726.

The previous prime is 1091794703. The next prime is 1091794729. The reversal of 1091794727 is 7274971901.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (7274971901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1091794727 - 2⁸ = 1091794471 is a prime.

Together with 1091794729, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1091794729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545897363 + 545897364.

It is an arithmetic number, because the mean of its divisors is an integer number (545897364).

Almost surely, 2^1091794727 is an apocalyptic number.

1091794727 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091794727 is an equidigital number, since it uses as much as digits as its factorization.

1091794727 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 222264, while the sum is 47.

The square root of 1091794727 is about 33042.3172159581. The cubic root of 1091794727 is about 1029.7069977527.

The spelling of 1091794727 in words is "one billion, ninety-one million, seven hundred ninety-four thousand, seven hundred twenty-seven".