16165116 has 72 divisors (see below), whose sum is σ = 46103120. Its totient is φ = 4894560.

The previous prime is 16165109. The next prime is 16165117. The reversal of 16165116 is 61156161.

16165116 is a `hidden beast` number, since 1 + 6 + 1 + 651 + 1 + 6 = 666.

It is a super-2 number, since 2×16165116² = 522621950586912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 16165116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16165117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12450 + ... + 13686.

Almost surely, 2^16165116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16165116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23051560).

16165116 is an abundant number, since it is smaller than the sum of its proper divisors (29938004).

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

16165116 is a wasteful number, since it uses less digits than its factorization.

16165116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1272 (or 1253 counting only the distinct ones).

The product of its digits is 1080, while the sum is 27.

The square root of 16165116 is about 4020.5865243768. The cubic root of 16165116 is about 252.8480499049.

The spelling of 16165116 in words is "sixteen million, one hundred sixty-five thousand, one hundred sixteen".