16540165 has 16 divisors (see below), whose sum is σ = 21384000. Its totient is φ = 12241152.

The previous prime is 16540163. The next prime is 16540169. The reversal of 16540165 is 56104561.

It is a cyclic number.

It is not a de Polignac number, because 16540165 - 2¹ = 16540163 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16540163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2061 + ... + 6109.

It is an arithmetic number, because the mean of its divisors is an integer number (1336500).

Almost surely, 2^16540165 is an apocalyptic number.

It is an amenable number.

16540165 is a deficient number, since it is larger than the sum of its proper divisors (4843835).

16540165 is a wasteful number, since it uses less digits than its factorization.

16540165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4116.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 16540165 is about 4066.9601670043. The cubic root of 16540165 is about 254.7885726658.

The spelling of 16540165 in words is "sixteen million, five hundred forty thousand, one hundred sixty-five".