164235813 has 16 divisors (see below), whose sum is σ = 255590400. Its totient is φ = 91851696.

The previous prime is 164235811. The next prime is 164235821. The reversal of 164235813 is 318532461.

It is not a de Polignac number, because 164235813 - 2¹ = 164235811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164235811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82213 + ... + 84186.

It is an arithmetic number, because the mean of its divisors is an integer number (15974400).

Almost surely, 2^164235813 is an apocalyptic number.

It is an amenable number.

164235813 is a deficient number, since it is larger than the sum of its proper divisors (91354587).

164235813 is a wasteful number, since it uses less digits than its factorization.

164235813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166456.

The product of its digits is 17280, while the sum is 33.

The square root of 164235813 is about 12815.4521184389. The cubic root of 164235813 is about 547.6325935609.

The spelling of 164235813 in words is "one hundred sixty-four million, two hundred thirty-five thousand, eight hundred thirteen".