1375257917 has 8 divisors (see below), whose sum is σ = 1501774560. Its totient is φ = 1248990160.

The previous prime is 1375257911. The next prime is 1375257941. The reversal of 1375257917 is 7197525731.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1375257917 - 2⁶ = 1375257853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375257911) 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 in 7 ways as a sum of consecutive naturals, for example, 50567 + ... + 72852.

It is an arithmetic number, because the mean of its divisors is an integer number (187721820).

Almost surely, 2^1375257917 is an apocalyptic number.

It is an amenable number.

1375257917 is a deficient number, since it is larger than the sum of its proper divisors (126516643).

1375257917 is a wasteful number, since it uses less digits than its factorization.

1375257917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124443.

The product of its digits is 463050, while the sum is 47.

The square root of 1375257917 is about 37084.4700245264. The cubic root of 1375257917 is about 1112.0595684861.

The spelling of 1375257917 in words is "one billion, three hundred seventy-five million, two hundred fifty-seven thousand, nine hundred seventeen".