1323299189 has 2 divisors, whose sum is σ = 1323299190. Its totient is φ = 1323299188.

The previous prime is 1323299183. The next prime is 1323299249. The reversal of 1323299189 is 9819923231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1311671089 + 11628100 = 36217^2 + 3410^2 .

It is a cyclic number.

It is not a de Polignac number, because 1323299189 - 2¹² = 1323295093 is a prime.

It is a super-2 number, since 2×1323299189² = 3502241487216115442, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1323299183) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661649594 + 661649595.

It is an arithmetic number, because the mean of its divisors is an integer number (661649595).

Almost surely, 2^1323299189 is an apocalyptic number.

It is an amenable number.

1323299189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323299189 is an equidigital number, since it uses as much as digits as its factorization.

1323299189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 209952, while the sum is 47.

The square root of 1323299189 is about 36377.1795085875. The cubic root of 1323299189 is about 1097.8744599076.

The spelling of 1323299189 in words is "one billion, three hundred twenty-three million, two hundred ninety-nine thousand, one hundred eighty-nine".