1223827109 has 2 divisors, whose sum is σ = 1223827110. Its totient is φ = 1223827108.

The previous prime is 1223827103. The next prime is 1223827169. The reversal of 1223827109 is 9017283221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 877048225 + 346778884 = 29615^2 + 18622^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223827109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1223827103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611913554 + 611913555.

It is an arithmetic number, because the mean of its divisors is an integer number (611913555).

Almost surely, 2^1223827109 is an apocalyptic number.

It is an amenable number.

1223827109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223827109 is an equidigital number, since it uses as much as digits as its factorization.

1223827109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1223827109 is about 34983.2404016552. The cubic root of 1223827109 is about 1069.6458807200.

The spelling of 1223827109 in words is "one billion, two hundred twenty-three million, eight hundred twenty-seven thousand, one hundred nine".