165946836 has 96 divisors (see below), whose sum is σ = 449003520. Its totient is φ = 47174400.

The previous prime is 165946811. The next prime is 165946841. The reversal of 165946836 is 638649561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 318256 + ... + 318776.

It is an arithmetic number, because the mean of its divisors is an integer number (4677120).

Almost surely, 2^165946836 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165946836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224501760).

165946836 is an abundant number, since it is smaller than the sum of its proper divisors (283056684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

165946836 is a wasteful number, since it uses less digits than its factorization.

165946836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685 (or 683 counting only the distinct ones).

The product of its digits is 933120, while the sum is 48.

The square root of 165946836 is about 12882.0353981815. The cubic root of 165946836 is about 549.5277886307.

The spelling of 165946836 in words is "one hundred sixty-five million, nine hundred forty-six thousand, eight hundred thirty-six".