1123630709 has 2 divisors, whose sum is σ = 1123630710. Its totient is φ = 1123630708.

The previous prime is 1123630699. The next prime is 1123630771. The reversal of 1123630709 is 9070363211.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 719419684 + 404211025 = 26822^2 + 20105^2 .

It is a cyclic number.

It is not a de Polignac number, because 1123630709 - 2²⁰ = 1122582133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1123632709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561815354 + 561815355.

It is an arithmetic number, because the mean of its divisors is an integer number (561815355).

Almost surely, 2^1123630709 is an apocalyptic number.

It is an amenable number.

1123630709 is a deficient number, since it is larger than the sum of its proper divisors (1).

1123630709 is an equidigital number, since it uses as much as digits as its factorization.

1123630709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 1123630709 is about 33520.6012625072. The cubic root of 1123630709 is about 1039.6197787235.

The spelling of 1123630709 in words is "one billion, one hundred twenty-three million, six hundred thirty thousand, seven hundred nine".