164213593 has 4 divisors (see below), whose sum is σ = 164263680. Its totient is φ = 164163508.

The previous prime is 164213563. The next prime is 164213597. The reversal of 164213593 is 395312461.

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 164213593 - 2²¹ = 162116441 is a prime.

It is a super-2 number, since 2×164213593² = 53932208251939298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164213597) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19753 + ... + 26806.

It is an arithmetic number, because the mean of its divisors is an integer number (41065920).

Almost surely, 2^164213593 is an apocalyptic number.

It is an amenable number.

164213593 is a deficient number, since it is larger than the sum of its proper divisors (50087).

164213593 is an equidigital number, since it uses as much as digits as its factorization.

164213593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50086.

The product of its digits is 19440, while the sum is 34.

The square root of 164213593 is about 12814.5851669104. The cubic root of 164213593 is about 547.6078954458.

The spelling of 164213593 in words is "one hundred sixty-four million, two hundred thirteen thousand, five hundred ninety-three".