1375012765 has 24 divisors (see below), whose sum is σ = 1926429912. Its totient is φ = 939415680.

The previous prime is 1375012753. The next prime is 1375012787. The reversal of 1375012765 is 5672105731.

It can be written as a sum of positive squares in 4 ways, for example, as 51581124 + 1323431641 = 7182^2 + 36379^2 .

It is not a de Polignac number, because 1375012765 - 2¹¹ = 1375010717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 57735 + ... + 77995.

It is an arithmetic number, because the mean of its divisors is an integer number (80267913).

Almost surely, 2^1375012765 is an apocalyptic number.

It is an amenable number.

1375012765 is a deficient number, since it is larger than the sum of its proper divisors (551417147).

1375012765 is a wasteful number, since it uses less digits than its factorization.

1375012765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20557 (or 20550 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 1375012765 is about 37081.1645583037. The cubic root of 1375012765 is about 1111.9934863777.

The spelling of 1375012765 in words is "one billion, three hundred seventy-five million, twelve thousand, seven hundred sixty-five".