1323753779 has 2 divisors, whose sum is σ = 1323753780. Its totient is φ = 1323753778.

The previous prime is 1323753733. The next prime is 1323753787. The reversal of 1323753779 is 9773573231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1323753779 - 2²⁰ = 1322705203 is a prime.

It is not a weakly prime, because it can be changed into another prime (1323753709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 661876889 + 661876890.

It is an arithmetic number, because the mean of its divisors is an integer number (661876890).

Almost surely, 2^1323753779 is an apocalyptic number.

1323753779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1323753779 is an equidigital number, since it uses as much as digits as its factorization.

1323753779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 833490, while the sum is 47.

The square root of 1323753779 is about 36383.4272574753. The cubic root of 1323753779 is about 1098.0001622976. Note that the first 3 decimals are identical.

The spelling of 1323753779 in words is "one billion, three hundred twenty-three million, seven hundred fifty-three thousand, seven hundred seventy-nine".