164213365 has 8 divisors (see below), whose sum is σ = 198312120. Its totient is φ = 130533312.

The previous prime is 164213339. The next prime is 164213369. The reversal of 164213365 is 563312461.

It can be written as a sum of positive squares in 4 ways, for example, as 142884 + 164070481 = 378^2 + 12809^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 164213365 - 2¹¹ = 164211317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164213369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103810 + ... + 105379.

It is an arithmetic number, because the mean of its divisors is an integer number (24789015).

Almost surely, 2^164213365 is an apocalyptic number.

It is an amenable number.

164213365 is a deficient number, since it is larger than the sum of its proper divisors (34098755).

164213365 is a wasteful number, since it uses less digits than its factorization.

164213365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209351.

The product of its digits is 12960, while the sum is 31.

The square root of 164213365 is about 12814.5762707941. The cubic root of 164213365 is about 547.6076420063.

The spelling of 164213365 in words is "one hundred sixty-four million, two hundred thirteen thousand, three hundred sixty-five".