165443916 has 96 divisors (see below), whose sum is σ = 433520640. Its totient is φ = 48686400.

The previous prime is 165443911. The next prime is 165443917. The reversal of 165443916 is 619344561.

It is not an unprimeable number, because it can be changed into a prime (165443911) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1190175 + ... + 1190313.

It is an arithmetic number, because the mean of its divisors is an integer number (4515840).

Almost surely, 2^165443916 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 165443916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216760320).

165443916 is an abundant number, since it is smaller than the sum of its proper divisors (268076724).

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

165443916 is a wasteful number, since it uses less digits than its factorization.

165443916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355 (or 353 counting only the distinct ones).

The product of its digits is 77760, while the sum is 39.

The square root of 165443916 is about 12862.5003790087. The cubic root of 165443916 is about 548.9720922373.

The spelling of 165443916 in words is "one hundred sixty-five million, four hundred forty-three thousand, nine hundred sixteen".