164365213 has 4 divisors (see below), whose sum is σ = 166680288. Its totient is φ = 162050140.

The previous prime is 164365207. The next prime is 164365217. The reversal of 164365213 is 312563461.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 164365213 - 2⁹ = 164364701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164365217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1157431 + ... + 1157572.

It is an arithmetic number, because the mean of its divisors is an integer number (41670072).

Almost surely, 2^164365213 is an apocalyptic number.

It is an amenable number.

164365213 is a deficient number, since it is larger than the sum of its proper divisors (2315075).

164365213 is an equidigital number, since it uses as much as digits as its factorization.

164365213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2315074.

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

The square root of 164365213 is about 12820.4997172497. The cubic root of 164365213 is about 547.7763808253.

The spelling of 164365213 in words is "one hundred sixty-four million, three hundred sixty-five thousand, two hundred thirteen".