16531164 has 36 divisors (see below), whose sum is σ = 45002776. Its totient is φ = 5086368.

The previous prime is 16531139. The next prime is 16531171. The reversal of 16531164 is 46113561.

16531164 is a `hidden beast` number, since 1 + 653 + 1 + 1 + 6 + 4 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17194 + ... + 18129.

Almost surely, 2^16531164 is an apocalyptic number.

It is an amenable number.

16531164 is an abundant number, since it is smaller than the sum of its proper divisors (28471612).

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

16531164 is a wasteful number, since it uses less digits than its factorization.

16531164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35346 (or 35341 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 16531164 is about 4065.8534159509. The cubic root of 16531164 is about 254.7423464427.

It can be divided in two parts, 165 and 31164, that added together give a square (31329 = 177²).

The spelling of 16531164 in words is "sixteen million, five hundred thirty-one thousand, one hundred sixty-four".