1373747765 has 24 divisors (see below), whose sum is σ = 1788356520. Its totient is φ = 1012587264.

The previous prime is 1373747743. The next prime is 1373747779. The reversal of 1373747765 is 5677473731.

1373747765 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 12 ways, for example, as 1162946404 + 210801361 = 34102^2 + 14519^2 .

It is not a de Polignac number, because 1373747765 - 2⁶ = 1373747701 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 597959 + ... + 600251.

It is an arithmetic number, because the mean of its divisors is an integer number (74514855).

Almost surely, 2^1373747765 is an apocalyptic number.

It is an amenable number.

1373747765 is a deficient number, since it is larger than the sum of its proper divisors (414608755).

1373747765 is a wasteful number, since it uses less digits than its factorization.

1373747765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3033 (or 3020 counting only the distinct ones).

The product of its digits is 2593080, while the sum is 50.

The square root of 1373747765 is about 37064.1034560395. The cubic root of 1373747765 is about 1111.6523735794.

The spelling of 1373747765 in words is "one billion, three hundred seventy-three million, seven hundred forty-seven thousand, seven hundred sixty-five".