1428895978193 has 2 divisors, whose sum is σ = 1428895978194. Its totient is φ = 1428895978192.

The previous prime is 1428895978171. The next prime is 1428895978283. The reversal of 1428895978193 is 3918795988241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1416128560144 + 12767418049 = 1190012^2 + 112993^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428895978193 - 2⁶ = 1428895978129 is a prime.

It is a super-2 number, since 2×1428895978193² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1428895978193.

It is not a weakly prime, because it can be changed into another prime (1428895978793) 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, 714447989096 + 714447989097.

It is an arithmetic number, because the mean of its divisors is an integer number (714447989097).

Almost surely, 2^{1428895978193} is an apocalyptic number.

It is an amenable number.

1428895978193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428895978193 is an equidigital number, since it uses as much as digits as its factorization.

1428895978193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 313528320, while the sum is 74.

The spelling of 1428895978193 in words is "one trillion, four hundred twenty-eight billion, eight hundred ninety-five million, nine hundred seventy-eight thousand, one hundred ninety-three".