1378327781419 has 2 divisors, whose sum is σ = 1378327781420. Its totient is φ = 1378327781418.

The previous prime is 1378327781317. The next prime is 1378327781443. The reversal of 1378327781419 is 9141877238731.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9141877238731) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1378327781419 - 2⁷ = 1378327781291 is a prime.

It is a super-2 number, since 2×1378327781419² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1378327781449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 689163890709 + 689163890710.

It is an arithmetic number, because the mean of its divisors is an integer number (689163890710).

Almost surely, 2^{1378327781419} is an apocalyptic number.

1378327781419 is a deficient number, since it is larger than the sum of its proper divisors (1).

1378327781419 is an equidigital number, since it uses as much as digits as its factorization.

1378327781419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14224896, while the sum is 61.

The spelling of 1378327781419 in words is "one trillion, three hundred seventy-eight billion, three hundred twenty-seven million, seven hundred eighty-one thousand, four hundred nineteen".