165489085 has 16 divisors (see below), whose sum is σ = 201139200. Its totient is φ = 130701760.

The previous prime is 165489083. The next prime is 165489113. The reversal of 165489085 is 580984561.

It is not a de Polignac number, because 165489085 - 2¹ = 165489083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165489083) 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 in 15 ways as a sum of consecutive naturals, for example, 141714 + ... + 142876.

It is an arithmetic number, because the mean of its divisors is an integer number (12571200).

Almost surely, 2^165489085 is an apocalyptic number.

It is an amenable number.

165489085 is a deficient number, since it is larger than the sum of its proper divisors (35650115).

165489085 is a wasteful number, since it uses less digits than its factorization.

165489085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1508.

The product of its (nonzero) digits is 345600, while the sum is 46.

The square root of 165489085 is about 12864.2560997517. The cubic root of 165489085 is about 549.0220472609.

The spelling of 165489085 in words is "one hundred sixty-five million, four hundred eighty-nine thousand, eighty-five".