1375507387 has 18 divisors (see below), whose sum is σ = 1466819228. Its totient is φ = 1289486352.

The previous prime is 1375507373. The next prime is 1375507403. The reversal of 1375507387 is 7837055731.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-1375507387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1375507327) 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 17 ways as a sum of consecutive naturals, for example, 6982173 + ... + 6982369.

Almost surely, 2^1375507387 is an apocalyptic number.

1375507387 is a deficient number, since it is larger than the sum of its proper divisors (91311841).

1375507387 is an frugal number, since it uses more digits than its factorization.

1375507387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 507 (or 287 counting only the distinct ones).

The product of its (nonzero) digits is 617400, while the sum is 46.

The square root of 1375507387 is about 37087.8334093541. The cubic root of 1375507387 is about 1112.1268064745.

The spelling of 1375507387 in words is "one billion, three hundred seventy-five million, five hundred seven thousand, three hundred eighty-seven".