1728314326993 has 6 divisors (see below), whose sum is σ = 1824065813634. Its totient is φ = 1637350414704.

The previous prime is 1728314326967. The next prime is 1728314327017. The reversal of 1728314326993 is 3996234138271.

It can be written as a sum of positive squares in only one way, i.e., 1453259182144 + 275055144849 = 1205512^2 + 524457^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1728314326993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1728314326903) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2393786796 + ... + 2393787517.

It is an arithmetic number, because the mean of its divisors is an integer number (304010968939).

Almost surely, 2^{1728314326993} is an apocalyptic number.

It is an amenable number.

1728314326993 is a deficient number, since it is larger than the sum of its proper divisors (95751486641).

1728314326993 is an equidigital number, since it uses as much as digits as its factorization.

1728314326993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4787574351 (or 4787574332 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 58.

The spelling of 1728314326993 in words is "one trillion, seven hundred twenty-eight billion, three hundred fourteen million, three hundred twenty-six thousand, nine hundred ninety-three".