1728161041 has 2 divisors, whose sum is σ = 1728161042. Its totient is φ = 1728161040.

The previous prime is 1728160981. The next prime is 1728161059. The reversal of 1728161041 is 1401618271.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 876396816 + 851764225 = 29604^2 + 29185^2 .

It is an emirp because it is prime and its reverse (1401618271) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1728161041 - 2⁹ = 1728160529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1728160994 and 1728161012.

It is not a weakly prime, because it can be changed into another prime (1728161341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 864080520 + 864080521.

It is an arithmetic number, because the mean of its divisors is an integer number (864080521).

Almost surely, 2^1728161041 is an apocalyptic number.

It is an amenable number.

1728161041 is a deficient number, since it is larger than the sum of its proper divisors (1).

1728161041 is an equidigital number, since it uses as much as digits as its factorization.

1728161041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 1728161041 is about 41571.1563587062. The cubic root of 1728161041 is about 1200.0372768513.

The spelling of 1728161041 in words is "one billion, seven hundred twenty-eight million, one hundred sixty-one thousand, forty-one".