1380886789 has 2 divisors, whose sum is σ = 1380886790. Its totient is φ = 1380886788.

The previous prime is 1380886783. The next prime is 1380886813. The reversal of 1380886789 is 9876880831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1288092100 + 92794689 = 35890^2 + 9633^2 .

It is an emirp because it is prime and its reverse (9876880831) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1380886789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1380886783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690443394 + 690443395.

It is an arithmetic number, because the mean of its divisors is an integer number (690443395).

Almost surely, 2^1380886789 is an apocalyptic number.

It is an amenable number.

1380886789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380886789 is an equidigital number, since it uses as much as digits as its factorization.

1380886789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4644864, while the sum is 58.

The square root of 1380886789 is about 37160.2851038579. The cubic root of 1380886789 is about 1113.5747073578.

The spelling of 1380886789 in words is "one billion, three hundred eighty million, eight hundred eighty-six thousand, seven hundred eighty-nine".