1380883457 has 2 divisors, whose sum is σ = 1380883458. Its totient is φ = 1380883456.

The previous prime is 1380883451. The next prime is 1380883477. The reversal of 1380883457 is 7543880831.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 985708816 + 395174641 = 31396^2 + 19879^2 .

It is a cyclic number.

It is not a de Polignac number, because 1380883457 - 2¹⁸ = 1380621313 is a prime.

It is not a weakly prime, because it can be changed into another prime (1380883451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690441728 + 690441729.

It is an arithmetic number, because the mean of its divisors is an integer number (690441729).

Almost surely, 2^1380883457 is an apocalyptic number.

It is an amenable number.

1380883457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380883457 is an equidigital number, since it uses as much as digits as its factorization.

1380883457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 1380883457 is about 37160.2402710209. The cubic root of 1380883457 is about 1113.5738116933.

The spelling of 1380883457 in words is "one billion, three hundred eighty million, eight hundred eighty-three thousand, four hundred fifty-seven".