1366633013 has 2 divisors, whose sum is σ = 1366633014. Its totient is φ = 1366633012.

The previous prime is 1366632991. The next prime is 1366633027. The reversal of 1366633013 is 3103366631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1145010244 + 221622769 = 33838^2 + 14887^2 .

It is a cyclic number.

It is not a de Polignac number, because 1366633013 - 2²⁸ = 1098197557 is a prime.

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 (1366633313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 683316506 + 683316507.

It is an arithmetic number, because the mean of its divisors is an integer number (683316507).

Almost surely, 2^1366633013 is an apocalyptic number.

It is an amenable number.

1366633013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366633013 is an equidigital number, since it uses as much as digits as its factorization.

1366633013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 32.

The square root of 1366633013 is about 36967.9998512227. Note that the first 3 decimals coincide. The cubic root of 1366633013 is about 1109.7299380871.

Adding to 1366633013 its reverse (3103366631), we get a palindrome (4469999644).

The spelling of 1366633013 in words is "one billion, three hundred sixty-six million, six hundred thirty-three thousand, thirteen".