165838122 has 24 divisors (see below), whose sum is σ = 362500164. Its totient is φ = 54789504.

The previous prime is 165838121. The next prime is 165838129. The reversal of 165838122 is 221838561.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 165096801 + 741321 = 12849^2 + 861^2 .

It is not an unprimeable number, because it can be changed into a prime (165838121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38733 + ... + 42800.

Almost surely, 2^165838122 is an apocalyptic number.

165838122 is an abundant number, since it is smaller than the sum of its proper divisors (196662042).

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

165838122 is a wasteful number, since it uses less digits than its factorization.

165838122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81654 (or 81651 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 165838122 is about 12877.8151097148. The cubic root of 165838122 is about 549.4077614060.

The spelling of 165838122 in words is "one hundred sixty-five million, eight hundred thirty-eight thousand, one hundred twenty-two".