1380331597 has 12 divisors (see below), whose sum is σ = 1402228828. Its totient is φ = 1358697600.

The previous prime is 1380331553. The next prime is 1380331613. The reversal of 1380331597 is 7951330831.

It can be written as a sum of positive squares in 2 ways, for example, as 725278761 + 655052836 = 26931^2 + 25594^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1380331597 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 (1380331097) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5727397 + ... + 5727637.

Almost surely, 2^1380331597 is an apocalyptic number.

It is an amenable number.

1380331597 is a deficient number, since it is larger than the sum of its proper divisors (21897231).

1380331597 is an equidigital number, since it uses as much as digits as its factorization.

1380331597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780 (or 589 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 40.

The square root of 1380331597 is about 37152.8141195253. The cubic root of 1380331597 is about 1113.4254480439.

The spelling of 1380331597 in words is "one billion, three hundred eighty million, three hundred thirty-one thousand, five hundred ninety-seven".