428018895257 has 2 divisors, whose sum is σ = 428018895258. Its totient is φ = 428018895256.

The previous prime is 428018895229. The next prime is 428018895341. The reversal of 428018895257 is 752598810824.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 424483522576 + 3535372681 = 651524^2 + 59459^2 .

It is a cyclic number.

It is not a de Polignac number, because 428018895257 - 2⁸ = 428018895001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 428018895196 and 428018895205.

It is not a weakly prime, because it can be changed into another prime (428018891257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214009447628 + 214009447629.

It is an arithmetic number, because the mean of its divisors is an integer number (214009447629).

Almost surely, 2^428018895257 is an apocalyptic number.

It is an amenable number.

428018895257 is a deficient number, since it is larger than the sum of its proper divisors (1).

428018895257 is an equidigital number, since it uses as much as digits as its factorization.

428018895257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12902400, while the sum is 59.

The spelling of 428018895257 in words is "four hundred twenty-eight billion, eighteen million, eight hundred ninety-five thousand, two hundred fifty-seven".