165216093 has 12 divisors (see below), whose sum is σ = 256253760. Its totient is φ = 94409112.

The previous prime is 165216091. The next prime is 165216113. The reversal of 165216093 is 390612561.

It is a happy number.

It is not a de Polignac number, because 165216093 - 2¹ = 165216091 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165216091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 561813 + ... + 562106.

It is an arithmetic number, because the mean of its divisors is an integer number (21354480).

Almost surely, 2^165216093 is an apocalyptic number.

It is an amenable number.

165216093 is a deficient number, since it is larger than the sum of its proper divisors (91037667).

165216093 is a wasteful number, since it uses less digits than its factorization.

165216093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123936 (or 1123929 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 165216093 is about 12853.6412350742. The cubic root of 165216093 is about 548.7199908524.

The spelling of 165216093 in words is "one hundred sixty-five million, two hundred sixteen thousand, ninety-three".