1728885497 has 2 divisors, whose sum is σ = 1728885498. Its totient is φ = 1728885496.

The previous prime is 1728885491. The next prime is 1728885503. The reversal of 1728885497 is 7945888271.

It is a balanced prime because it is at equal distance from previous prime (1728885491) and next prime (1728885503).

It can be written as a sum of positive squares in only one way, i.e., 1402577401 + 326308096 = 37451^2 + 18064^2 .

It is a cyclic number.

It is not a de Polignac number, because 1728885497 - 2²⁰ = 1727836921 is a prime.

It is not a weakly prime, because it can be changed into another prime (1728885491) 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, 864442748 + 864442749.

It is an arithmetic number, because the mean of its divisors is an integer number (864442749).

Almost surely, 2^1728885497 is an apocalyptic number.

It is an amenable number.

1728885497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1728885497 is an equidigital number, since it uses as much as digits as its factorization.

1728885497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9031680, while the sum is 59.

The square root of 1728885497 is about 41579.8688910872. The cubic root of 1728885497 is about 1200.2049411547.

The spelling of 1728885497 in words is "one billion, seven hundred twenty-eight million, eight hundred eighty-five thousand, four hundred ninety-seven".