1705120513 has 2 divisors, whose sum is σ = 1705120514. Its totient is φ = 1705120512.

The previous prime is 1705120471. The next prime is 1705120531. The reversal of 1705120513 is 3150215071.

Together with next prime (1705120531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1389276529 + 315843984 = 37273^2 + 17772^2 .

It is a cyclic number.

It is not a de Polignac number, because 1705120513 - 2²⁵ = 1671566081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1705100513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 852560256 + 852560257.

It is an arithmetic number, because the mean of its divisors is an integer number (852560257).

Almost surely, 2^1705120513 is an apocalyptic number.

It is an amenable number.

1705120513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1705120513 is an equidigital number, since it uses as much as digits as its factorization.

1705120513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 1705120513 is about 41293.1049086891. The cubic root of 1705120513 is about 1194.6802744018.

Adding to 1705120513 its reverse (3150215071), we get a palindrome (4855335584).

The spelling of 1705120513 in words is "one billion, seven hundred five million, one hundred twenty thousand, five hundred thirteen".