1366909853 has 2 divisors, whose sum is σ = 1366909854. Its totient is φ = 1366909852.

The previous prime is 1366909801. The next prime is 1366909891. The reversal of 1366909853 is 3589096631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1042837849 + 324072004 = 32293^2 + 18002^2 .

It is a cyclic number.

It is not a de Polignac number, because 1366909853 - 2¹⁶ = 1366844317 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 (1366909553) 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, 683454926 + 683454927.

It is an arithmetic number, because the mean of its divisors is an integer number (683454927).

Almost surely, 2^1366909853 is an apocalyptic number.

It is an amenable number.

1366909853 is a deficient number, since it is larger than the sum of its proper divisors (1).

1366909853 is an equidigital number, since it uses as much as digits as its factorization.

1366909853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The square root of 1366909853 is about 36971.7439810458. The cubic root of 1366909853 is about 1109.8048660039.

The spelling of 1366909853 in words is "one billion, three hundred sixty-six million, nine hundred nine thousand, eight hundred fifty-three".