1428285517 has 2 divisors, whose sum is σ = 1428285518. Its totient is φ = 1428285516.

The previous prime is 1428285503. The next prime is 1428285557. The reversal of 1428285517 is 7155828241.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1203465481 + 224820036 = 34691^2 + 14994^2 .

It is a cyclic number.

It is not a de Polignac number, because 1428285517 - 2²³ = 1419896909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1428285557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714142758 + 714142759.

It is an arithmetic number, because the mean of its divisors is an integer number (714142759).

Almost surely, 2^1428285517 is an apocalyptic number.

It is an amenable number.

1428285517 is a deficient number, since it is larger than the sum of its proper divisors (1).

1428285517 is an equidigital number, since it uses as much as digits as its factorization.

1428285517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 179200, while the sum is 43.

The square root of 1428285517 is about 37792.6648570857. The cubic root of 1428285517 is about 1126.1727403936.

It can be divided in two parts, 14282 and 85517, that added together give a palindrome (99799).

The spelling of 1428285517 in words is "one billion, four hundred twenty-eight million, two hundred eighty-five thousand, five hundred seventeen".