1307441857 has 2 divisors, whose sum is σ = 1307441858. Its totient is φ = 1307441856.

The previous prime is 1307441803. The next prime is 1307441867. The reversal of 1307441857 is 7581447031.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 883040656 + 424401201 = 29716^2 + 20601^2 .

It is an emirp because it is prime and its reverse (7581447031) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1307441857 is a prime.

It is not a weakly prime, because it can be changed into another prime (1307441867) 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, 653720928 + 653720929.

It is an arithmetic number, because the mean of its divisors is an integer number (653720929).

Almost surely, 2^1307441857 is an apocalyptic number.

It is an amenable number.

1307441857 is a deficient number, since it is larger than the sum of its proper divisors (1).

1307441857 is an equidigital number, since it uses as much as digits as its factorization.

1307441857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 94080, while the sum is 40.

The square root of 1307441857 is about 36158.5654720980. The cubic root of 1307441857 is about 1093.4714832516.

Adding to 1307441857 its reverse (7581447031), we get a palindrome (8888888888).

The spelling of 1307441857 in words is "one billion, three hundred seven million, four hundred forty-one thousand, eight hundred fifty-seven".