1121326909 has 2 divisors, whose sum is σ = 1121326910. Its totient is φ = 1121326908.

The previous prime is 1121326903. The next prime is 1121326951. The reversal of 1121326909 is 9096231211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 774063684 + 347263225 = 27822^2 + 18635^2 .

It is a cyclic number.

It is not a de Polignac number, because 1121326909 - 2³ = 1121326901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121326901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560663454 + 560663455.

It is an arithmetic number, because the mean of its divisors is an integer number (560663455).

Almost surely, 2^1121326909 is an apocalyptic number.

It is an amenable number.

1121326909 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121326909 is an equidigital number, since it uses as much as digits as its factorization.

1121326909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 1121326909 is about 33486.2196881045. The cubic root of 1121326909 is about 1038.9087756086.

The spelling of 1121326909 in words is "one billion, one hundred twenty-one million, three hundred twenty-six thousand, nine hundred nine".