1306507957 has 2 divisors, whose sum is σ = 1306507958. Its totient is φ = 1306507956.

The previous prime is 1306507949. The next prime is 1306507981. The reversal of 1306507957 is 7597056031.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 913913361 + 392594596 = 30231^2 + 19814^2 .

It is a cyclic number.

It is not a de Polignac number, because 1306507957 - 2³ = 1306507949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1306507907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 653253978 + 653253979.

It is an arithmetic number, because the mean of its divisors is an integer number (653253979).

Almost surely, 2^1306507957 is an apocalyptic number.

It is an amenable number.

1306507957 is a deficient number, since it is larger than the sum of its proper divisors (1).

1306507957 is an equidigital number, since it uses as much as digits as its factorization.

1306507957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 198450, while the sum is 43.

The square root of 1306507957 is about 36145.6492125954. The cubic root of 1306507957 is about 1093.2110672711.

The spelling of 1306507957 in words is "one billion, three hundred six million, five hundred seven thousand, nine hundred fifty-seven".