165253944 has 64 divisors (see below), whose sum is σ = 445536000. Its totient is φ = 50906880.

The previous prime is 165253939. The next prime is 165253967. The reversal of 165253944 is 449352561.

165253944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14277 + ... + 23115.

It is an arithmetic number, because the mean of its divisors is an integer number (6961500).

Almost surely, 2^165253944 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 165253944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222768000).

165253944 is an abundant number, since it is smaller than the sum of its proper divisors (280282056).

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

165253944 is a wasteful number, since it uses less digits than its factorization.

165253944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8908 (or 8904 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 165253944 is about 12855.1135350879. The cubic root of 165253944 is about 548.7618915617.

The spelling of 165253944 in words is "one hundred sixty-five million, two hundred fifty-three thousand, nine hundred forty-four".