1380865583 has 2 divisors, whose sum is σ = 1380865584. Its totient is φ = 1380865582.

The previous prime is 1380865571. The next prime is 1380865621. The reversal of 1380865583 is 3855680831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1380865583 - 2⁸ = 1380865327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1380865523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690432791 + 690432792.

It is an arithmetic number, because the mean of its divisors is an integer number (690432792).

Almost surely, 2^1380865583 is an apocalyptic number.

1380865583 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380865583 is an equidigital number, since it uses as much as digits as its factorization.

1380865583 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 691200, while the sum is 47.

The square root of 1380865583 is about 37159.9997712594. Note that the first 3 decimals coincide. The cubic root of 1380865583 is about 1113.5690070145.

The spelling of 1380865583 in words is "one billion, three hundred eighty million, eight hundred sixty-five thousand, five hundred eighty-three".