16538166 has 12 divisors (see below), whose sum is σ = 35832732. Its totient is φ = 5512716.

The previous prime is 16538153. The next prime is 16538167. The reversal of 16538166 is 66183561.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16538166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16538167) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 459376 + ... + 459411.

It is an arithmetic number, because the mean of its divisors is an integer number (2986061).

Almost surely, 2^16538166 is an apocalyptic number.

16538166 is an abundant number, since it is smaller than the sum of its proper divisors (19294566).

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

16538166 is a wasteful number, since it uses less digits than its factorization.

16538166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 918795 (or 918792 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 16538166 is about 4066.7143986270. The cubic root of 16538166 is about 254.7783078977.

The spelling of 16538166 in words is "sixteen million, five hundred thirty-eight thousand, one hundred sixty-six".