1307397775 has 24 divisors (see below), whose sum is σ = 1680393440. Its totient is φ = 1008236160.

The previous prime is 1307397769. The next prime is 1307397779. The reversal of 1307397775 is 5777937031.

It is a de Polignac number, because none of the positive numbers 2^k-1307397775 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1307397779) 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 in 23 ways as a sum of consecutive naturals, for example, 94342 + ... + 107308.

Almost surely, 2^1307397775 is an apocalyptic number.

1307397775 is a deficient number, since it is larger than the sum of its proper divisors (372995665).

1307397775 is a wasteful number, since it uses less digits than its factorization.

1307397775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13123 (or 13118 counting only the distinct ones).

The product of its (nonzero) digits is 972405, while the sum is 49.

The square root of 1307397775 is about 36157.9559018482. The cubic root of 1307397775 is about 1093.4591938710.

The spelling of 1307397775 in words is "one billion, three hundred seven million, three hundred ninety-seven thousand, seven hundred seventy-five".