1091423833 has 2 divisors, whose sum is σ = 1091423834. Its totient is φ = 1091423832.

The previous prime is 1091423791. The next prime is 1091423849. The reversal of 1091423833 is 3383241901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1066153104 + 25270729 = 32652^2 + 5027^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1091423833 is a prime.

It is not a weakly prime, because it can be changed into another prime (1091423863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545711916 + 545711917.

It is an arithmetic number, because the mean of its divisors is an integer number (545711917).

Almost surely, 2^1091423833 is an apocalyptic number.

It is an amenable number.

1091423833 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091423833 is an equidigital number, since it uses as much as digits as its factorization.

1091423833 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 1091423833 is about 33036.7043301840. The cubic root of 1091423833 is about 1029.5903838288.

The spelling of 1091423833 in words is "one billion, ninety-one million, four hundred twenty-three thousand, eight hundred thirty-three".