1428895978819 has 2 divisors, whose sum is σ = 1428895978820. Its totient is φ = 1428895978818.

The previous prime is 1428895978793. The next prime is 1428895978871. The reversal of 1428895978819 is 9188795988241.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1428895978819 - 2¹⁷ = 1428895847747 is a prime.

It is a super-2 number, since 2×1428895978819² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1428895978619) 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, 714447989409 + 714447989410.

It is an arithmetic number, because the mean of its divisors is an integer number (714447989410).

Almost surely, 2^{1428895978819} is an apocalyptic number.

1428895978819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428895978819 is an equidigital number, since it uses as much as digits as its factorization.

1428895978819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 836075520, while the sum is 79.

The spelling of 1428895978819 in words is "one trillion, four hundred twenty-eight billion, eight hundred ninety-five million, nine hundred seventy-eight thousand, eight hundred nineteen".