1728893513 has 2 divisors, whose sum is σ = 1728893514. Its totient is φ = 1728893512.

The previous prime is 1728893503. The next prime is 1728893521. The reversal of 1728893513 is 3153988271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1698511369 + 30382144 = 41213^2 + 5512^2 .

It is a cyclic number.

It is not a de Polignac number, because 1728893513 - 2⁴ = 1728893497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1728893503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 864446756 + 864446757.

It is an arithmetic number, because the mean of its divisors is an integer number (864446757).

Almost surely, 2^1728893513 is an apocalyptic number.

It is an amenable number.

1728893513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1728893513 is an equidigital number, since it uses as much as digits as its factorization.

1728893513 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 47.

The square root of 1728893513 is about 41579.9652837758. The cubic root of 1728893513 is about 1200.2067960737.

The spelling of 1728893513 in words is "one billion, seven hundred twenty-eight million, eight hundred ninety-three thousand, five hundred thirteen".