1091137793 has 2 divisors, whose sum is σ = 1091137794. Its totient is φ = 1091137792.

The previous prime is 1091137777. The next prime is 1091137829. The reversal of 1091137793 is 3977311901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 735928384 + 355209409 = 27128^2 + 18847^2 .

It is an emirp because it is prime and its reverse (3977311901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1091137793 - 2⁴ = 1091137777 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1091137793.

It is not a weakly prime, because it can be changed into another prime (1091137193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545568896 + 545568897.

It is an arithmetic number, because the mean of its divisors is an integer number (545568897).

Almost surely, 2^1091137793 is an apocalyptic number.

It is an amenable number.

1091137793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091137793 is an equidigital number, since it uses as much as digits as its factorization.

1091137793 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35721, while the sum is 41.

The square root of 1091137793 is about 33032.3749221881. The cubic root of 1091137793 is about 1029.5004310667.

The spelling of 1091137793 in words is "one billion, ninety-one million, one hundred thirty-seven thousand, seven hundred ninety-three".