165017729 has 2 divisors, whose sum is σ = 165017730. Its totient is φ = 165017728.

The previous prime is 165017711. The next prime is 165017753. The reversal of 165017729 is 927710561.

165017729 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163200625 + 1817104 = 12775^2 + 1348^2 .

It is an emirp because it is prime and its reverse (927710561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 165017729 - 2⁸ = 165017473 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 165017692 and 165017701.

It is not a weakly prime, because it can be changed into another prime (165017029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82508864 + 82508865.

It is an arithmetic number, because the mean of its divisors is an integer number (82508865).

Almost surely, 2^165017729 is an apocalyptic number.

It is an amenable number.

165017729 is a deficient number, since it is larger than the sum of its proper divisors (1).

165017729 is an equidigital number, since it uses as much as digits as its factorization.

165017729 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26460, while the sum is 38.

The square root of 165017729 is about 12845.9226605176. The cubic root of 165017729 is about 548.5002990115.

The spelling of 165017729 in words is "one hundred sixty-five million, seventeen thousand, seven hundred twenty-nine".