1380822557 has 2 divisors, whose sum is σ = 1380822558. Its totient is φ = 1380822556.

The previous prime is 1380822551. The next prime is 1380822571. The reversal of 1380822557 is 7552280831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 782824441 + 597998116 = 27979^2 + 24454^2 .

It is an emirp because it is prime and its reverse (7552280831) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1380822557 - 2¹⁸ = 1380560413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1380822551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690411278 + 690411279.

It is an arithmetic number, because the mean of its divisors is an integer number (690411279).

Almost surely, 2^1380822557 is an apocalyptic number.

It is an amenable number.

1380822557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380822557 is an equidigital number, since it uses as much as digits as its factorization.

1380822557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 134400, while the sum is 41.

The square root of 1380822557 is about 37159.4208377902. The cubic root of 1380822557 is about 1113.5574411005.

The spelling of 1380822557 in words is "one billion, three hundred eighty million, eight hundred twenty-two thousand, five hundred fifty-seven".