1091108233 has 2 divisors, whose sum is σ = 1091108234. Its totient is φ = 1091108232.

The previous prime is 1091108197. The next prime is 1091108251. The reversal of 1091108233 is 3328011901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1060935184 + 30173049 = 32572^2 + 5493^2 .

It is a cyclic number.

It is not a de Polignac number, because 1091108233 - 2²⁵ = 1057553801 is a prime.

It is a super-2 number, since 2×1091108233² = 2381034352240764578, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1091108533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545554116 + 545554117.

It is an arithmetic number, because the mean of its divisors is an integer number (545554117).

Almost surely, 2^1091108233 is an apocalyptic number.

It is an amenable number.

1091108233 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091108233 is an equidigital number, since it uses as much as digits as its factorization.

1091108233 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 1091108233 is about 33031.9274793343. The cubic root of 1091108233 is about 1029.4911342551.

The spelling of 1091108233 in words is "one billion, ninety-one million, one hundred eight thousand, two hundred thirty-three".