1380413681 has 2 divisors, whose sum is σ = 1380413682. Its totient is φ = 1380413680.

The previous prime is 1380413677. The next prime is 1380413687. The reversal of 1380413681 is 1863140831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1156612081 + 223801600 = 34009^2 + 14960^2 .

It is a cyclic number.

It is not a de Polignac number, because 1380413681 - 2² = 1380413677 is a prime.

It is a super-2 number, since 2×1380413681² = 3811083861383939522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1380413687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690206840 + 690206841.

It is an arithmetic number, because the mean of its divisors is an integer number (690206841).

Almost surely, 2^1380413681 is an apocalyptic number.

It is an amenable number.

1380413681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380413681 is an equidigital number, since it uses as much as digits as its factorization.

1380413681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 1380413681 is about 37153.9187838914. The cubic root of 1380413681 is about 1113.4475182487.

The spelling of 1380413681 in words is "one billion, three hundred eighty million, four hundred thirteen thousand, six hundred eighty-one".