165791044 has 24 divisors (see below), whose sum is σ = 298070136. Its totient is φ = 80640000.

The previous prime is 165791033. The next prime is 165791047. The reversal of 165791044 is 440197561.

165791044 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 925444 + 164865600 = 962^2 + 12840^2 .

It is a junction number, because it is equal to n+sod(n) for n = 165790994 and 165791012.

It is not an unprimeable number, because it can be changed into a prime (165791047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64504 + ... + 67024.

It is an arithmetic number, because the mean of its divisors is an integer number (12419589).

Almost surely, 2^165791044 is an apocalyptic number.

It is an amenable number.

165791044 is a deficient number, since it is larger than the sum of its proper divisors (132279092).

165791044 is a wasteful number, since it uses less digits than its factorization.

165791044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2967 (or 2965 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 165791044 is about 12875.9871077910. The cubic root of 165791044 is about 549.3557679998.

The spelling of 165791044 in words is "one hundred sixty-five million, seven hundred ninety-one thousand, forty-four".