1028516513 has 2 divisors, whose sum is σ = 1028516514. Its totient is φ = 1028516512.

The previous prime is 1028516459. The next prime is 1028516519. The reversal of 1028516513 is 3156158201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 621405184 + 407111329 = 24928^2 + 20177^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028516513 - 2⁸ = 1028516257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1028516513.

It is not a weakly prime, because it can be changed into another prime (1028516519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514258256 + 514258257.

It is an arithmetic number, because the mean of its divisors is an integer number (514258257).

Almost surely, 2^1028516513 is an apocalyptic number.

It is an amenable number.

1028516513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028516513 is an equidigital number, since it uses as much as digits as its factorization.

1028516513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 1028516513 is about 32070.4928711737. The cubic root of 1028516513 is about 1009.4165545079.

The spelling of 1028516513 in words is "one billion, twenty-eight million, five hundred sixteen thousand, five hundred thirteen".