165966126 has 16 divisors (see below), whose sum is σ = 342640128. Its totient is φ = 53537400.

The previous prime is 165966109. The next prime is 165966131. The reversal of 165966126 is 621669561.

165966126 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 7 ways as a sum of consecutive naturals, for example, 445960 + ... + 446331.

It is an arithmetic number, because the mean of its divisors is an integer number (21415008).

Almost surely, 2^165966126 is an apocalyptic number.

165966126 is an abundant number, since it is smaller than the sum of its proper divisors (176674002).

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

165966126 is a wasteful number, since it uses less digits than its factorization.

165966126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892327.

The product of its digits is 116640, while the sum is 42.

The square root of 165966126 is about 12882.7840935102. The cubic root of 165966126 is about 549.5490805509.

It can be divided in two parts, 16596 and 6126, that added together give a palindrome (22722).

The spelling of 165966126 in words is "one hundred sixty-five million, nine hundred sixty-six thousand, one hundred twenty-six".