1728106111 has 2 divisors, whose sum is σ = 1728106112. Its totient is φ = 1728106110.

The previous prime is 1728106109. The next prime is 1728106123. The reversal of 1728106111 is 1116018271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1728106111 - 2¹ = 1728106109 is a prime.

Together with 1728106109, it forms a pair of twin primes.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1728106111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1728106141) 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, 864053055 + 864053056.

It is an arithmetic number, because the mean of its divisors is an integer number (864053056).

Almost surely, 2^1728106111 is an apocalyptic number.

1728106111 is a deficient number, since it is larger than the sum of its proper divisors (1).

1728106111 is an equidigital number, since it uses as much as digits as its factorization.

1728106111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 28.

The square root of 1728106111 is about 41570.4956790270. The cubic root of 1728106111 is about 1200.0245622287.

The spelling of 1728106111 in words is "one billion, seven hundred twenty-eight million, one hundred six thousand, one hundred eleven".