1375487317 has 4 divisors (see below), whose sum is σ = 1383723936. Its totient is φ = 1367250700.

The previous prime is 1375487297. The next prime is 1375487327. The reversal of 1375487317 is 7137845731.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7137845731 = 16267 ⋅438793.

It is a cyclic number.

It is not a de Polignac number, because 1375487317 - 2¹¹ = 1375485269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375487327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4118059 + ... + 4118392.

It is an arithmetic number, because the mean of its divisors is an integer number (345930984).

Almost surely, 2^1375487317 is an apocalyptic number.

It is an amenable number.

1375487317 is a deficient number, since it is larger than the sum of its proper divisors (8236619).

1375487317 is an equidigital number, since it uses as much as digits as its factorization.

1375487317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8236618.

The product of its digits is 493920, while the sum is 46.

The square root of 1375487317 is about 37087.5628344597. The cubic root of 1375487317 is about 1112.1213974417.

The spelling of 1375487317 in words is "one billion, three hundred seventy-five million, four hundred eighty-seven thousand, three hundred seventeen".