165810022 has 12 divisors (see below), whose sum is σ = 289321740. Its totient is φ = 71061396.

The previous prime is 165810011. The next prime is 165810067. The reversal of 165810022 is 220018561.

165810022 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 5 ways as a sum of consecutive naturals, for example, 845872 + ... + 846067.

It is an arithmetic number, because the mean of its divisors is an integer number (24110145).

Almost surely, 2^165810022 is an apocalyptic number.

165810022 is a deficient number, since it is larger than the sum of its proper divisors (123511718).

165810022 is a wasteful number, since it uses less digits than its factorization.

165810022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691955 (or 1691948 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 165810022 is about 12876.7240399102. The cubic root of 165810022 is about 549.3767286736.

Adding to 165810022 its reverse (220018561), we get a palindrome (385828583).

The spelling of 165810022 in words is "one hundred sixty-five million, eight hundred ten thousand, twenty-two".