1728603013 has 2 divisors, whose sum is σ = 1728603014. Its totient is φ = 1728603012.

The previous prime is 1728603011. The next prime is 1728603031. The reversal of 1728603013 is 3103068271.

Together with next prime (1728603031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1472026689 + 256576324 = 38367^2 + 16018^2 .

It is a cyclic number.

It is not a de Polignac number, because 1728603013 - 2¹ = 1728603011 is a prime.

Together with 1728603011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1728603011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 864301506 + 864301507.

It is an arithmetic number, because the mean of its divisors is an integer number (864301507).

Almost surely, 2^1728603013 is an apocalyptic number.

It is an amenable number.

1728603013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1728603013 is an equidigital number, since it uses as much as digits as its factorization.

1728603013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 1728603013 is about 41576.4718681131. The cubic root of 1728603013 is about 1200.1395701088.

The spelling of 1728603013 in words is "one billion, seven hundred twenty-eight million, six hundred three thousand, thirteen".