164144573 has 4 divisors (see below), whose sum is σ = 166594560. Its totient is φ = 161694588.

The previous prime is 164144567. The next prime is 164144587. The reversal of 164144573 is 375441461.

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, and also an emirpimes, since its reverse is a distinct semiprime: 375441461 = 5849 ⋅64189.

It is a cyclic number.

It is not a de Polignac number, because 164144573 - 2⁴ = 164144557 is a prime.

It is a super-3 number, since 3×164144573³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164144873) 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, 1224893 + ... + 1225026.

It is an arithmetic number, because the mean of its divisors is an integer number (41648640).

Almost surely, 2^164144573 is an apocalyptic number.

It is an amenable number.

164144573 is a deficient number, since it is larger than the sum of its proper divisors (2449987).

164144573 is an equidigital number, since it uses as much as digits as its factorization.

164144573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2449986.

The product of its digits is 40320, while the sum is 35.

The square root of 164144573 is about 12811.8918587381. The cubic root of 164144573 is about 547.5311636870.

The spelling of 164144573 in words is "one hundred sixty-four million, one hundred forty-four thousand, five hundred seventy-three".