1428895913257 has 2 divisors, whose sum is σ = 1428895913258. Its totient is φ = 1428895913256.

The previous prime is 1428895913227. The next prime is 1428895913351. The reversal of 1428895913257 is 7523195988241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 791478901801 + 637417011456 = 889651^2 + 798384^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1428895913257 is a prime.

It is not a weakly prime, because it can be changed into another prime (1428895913227) 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, 714447956628 + 714447956629.

It is an arithmetic number, because the mean of its divisors is an integer number (714447956629).

Almost surely, 2^{1428895913257} is an apocalyptic number.

It is an amenable number.

1428895913257 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428895913257 is an equidigital number, since it uses as much as digits as its factorization.

1428895913257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43545600, while the sum is 64.

The spelling of 1428895913257 in words is "one trillion, four hundred twenty-eight billion, eight hundred ninety-five million, nine hundred thirteen thousand, two hundred fifty-seven".