1380886813 has 2 divisors, whose sum is σ = 1380886814. Its totient is φ = 1380886812.

The previous prime is 1380886789. The next prime is 1380886841. The reversal of 1380886813 is 3186880831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1318997124 + 61889689 = 36318^2 + 7867^2 .

It is a cyclic number.

It is not a de Polignac number, because 1380886813 - 2²¹ = 1378789661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1380886513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690443406 + 690443407.

It is an arithmetic number, because the mean of its divisors is an integer number (690443407).

Almost surely, 2^1380886813 is an apocalyptic number.

It is an amenable number.

1380886813 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380886813 is an equidigital number, since it uses as much as digits as its factorization.

1380886813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 1380886813 is about 37160.2854267833. The cubic root of 1380886813 is about 1113.5747138092.

The spelling of 1380886813 in words is "one billion, three hundred eighty million, eight hundred eighty-six thousand, eight hundred thirteen".