1307235423649 has 2 divisors, whose sum is σ = 1307235423650. Its totient is φ = 1307235423648.

The previous prime is 1307235423631. The next prime is 1307235423653. The reversal of 1307235423649 is 9463245327031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 756586832400 + 550648591249 = 869820^2 + 742057^2 .

It is an emirp because it is prime and its reverse (9463245327031) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1307235423649 - 2¹³ = 1307235415457 is a prime.

It is not a weakly prime, because it can be changed into another prime (1307235423679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653617711824 + 653617711825.

It is an arithmetic number, because the mean of its divisors is an integer number (653617711825).

Almost surely, 2^{1307235423649} is an apocalyptic number.

It is an amenable number.

1307235423649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1307235423649 is an equidigital number, since it uses as much as digits as its factorization.

1307235423649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 49.

The spelling of 1307235423649 in words is "one trillion, three hundred seven billion, two hundred thirty-five million, four hundred twenty-three thousand, six hundred forty-nine".