16164189 has 6 divisors (see below), whose sum is σ = 23348286. Its totient is φ = 10776120.

The previous prime is 16164151. The next prime is 16164191. The reversal of 16164189 is 98146161.

It is a happy number.

16164189 is a `hidden beast` number, since 1 + 6 + 1 + 641 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 11168964 + 4995225 = 3342^2 + 2235^2 .

It is not a de Polignac number, because 16164189 - 2¹⁵ = 16131421 is a prime.

It is a super-2 number, since 2×16164189² = 522562012055442, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16164119) 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, 898002 + ... + 898019.

It is an arithmetic number, because the mean of its divisors is an integer number (3891381).

Almost surely, 2^16164189 is an apocalyptic number.

It is an amenable number.

16164189 is a deficient number, since it is larger than the sum of its proper divisors (7184097).

16164189 is a wasteful number, since it uses less digits than its factorization.

16164189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1796027 (or 1796024 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 16164189 is about 4020.4712410363. The cubic root of 16164189 is about 252.8432165625.

The spelling of 16164189 in words is "sixteen million, one hundred sixty-four thousand, one hundred eighty-nine".