16540164 has 36 divisors (see below), whose sum is σ = 42233100. Its totient is φ = 5457600.

The previous prime is 16540163. The next prime is 16540169. The reversal of 16540164 is 46104561.

16540164 is a `hidden beast` number, since 1 + 654 + 0 + 1 + 6 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14379264 + 2160900 = 3792^2 + 1470^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1362 + ... + 5910.

Almost surely, 2^16540164 is an apocalyptic number.

It is an amenable number.

16540164 is an abundant number, since it is smaller than the sum of its proper divisors (25692936).

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

16540164 is a wasteful number, since it uses less digits than its factorization.

16540164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4660 (or 4655 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 16540164 is about 4066.9600440624. The cubic root of 16540164 is about 254.7885675311.

The spelling of 16540164 in words is "sixteen million, five hundred forty thousand, one hundred sixty-four".