1307543641 has 2 divisors, whose sum is σ = 1307543642. Its totient is φ = 1307543640.

The previous prime is 1307543639. The next prime is 1307543683. The reversal of 1307543641 is 1463457031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1109156416 + 198387225 = 33304^2 + 14085^2 .

It is a cyclic number.

It is not a de Polignac number, because 1307543641 - 2¹ = 1307543639 is a prime.

Together with 1307543639, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1307543597 and 1307543606.

It is not a weakly prime, because it can be changed into another prime (1307543621) 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, 653771820 + 653771821.

It is an arithmetic number, because the mean of its divisors is an integer number (653771821).

Almost surely, 2^1307543641 is an apocalyptic number.

It is an amenable number.

1307543641 is a deficient number, since it is larger than the sum of its proper divisors (1).

1307543641 is an equidigital number, since it uses as much as digits as its factorization.

1307543641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 1307543641 is about 36159.9729120474. The cubic root of 1307543641 is about 1093.4998580031.

It can be divided in two parts, 13075 and 43641, that multiplied together give a palindrome (570606075).

The spelling of 1307543641 in words is "one billion, three hundred seven million, five hundred forty-three thousand, six hundred forty-one".