165322812 has 12 divisors (see below), whose sum is σ = 385753256. Its totient is φ = 55107600.

The previous prime is 165322799. The next prime is 165322837. The reversal of 165322812 is 218223561.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 165322812.

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 3 ways as a sum of consecutive naturals, for example, 6888439 + ... + 6888462.

Almost surely, 2^165322812 is an apocalyptic number.

165322812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

165322812 is an abundant number, since it is smaller than the sum of its proper divisors (220430444).

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

165322812 is a wasteful number, since it uses less digits than its factorization.

165322812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13776908 (or 13776906 counting only the distinct ones).

The product of its digits is 5760, while the sum is 30.

The square root of 165322812 is about 12857.7918788570. The cubic root of 165322812 is about 548.8381113973.

The spelling of 165322812 in words is "one hundred sixty-five million, three hundred twenty-two thousand, eight hundred twelve".