164538373 has 4 divisors (see below), whose sum is σ = 170212140. Its totient is φ = 158864608.

The previous prime is 164538337. The next prime is 164538377. The reversal of 164538373 is 373835461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 90973444 + 73564929 = 9538^2 + 8577^2 .

It is a cyclic number.

It is not a de Polignac number, because 164538373 - 2¹³ = 164530181 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 (164538377) 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, 2836840 + ... + 2836897.

It is an arithmetic number, because the mean of its divisors is an integer number (42553035).

Almost surely, 2^164538373 is an apocalyptic number.

It is an amenable number.

164538373 is a deficient number, since it is larger than the sum of its proper divisors (5673767).

164538373 is an equidigital number, since it uses as much as digits as its factorization.

164538373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5673766.

The product of its digits is 181440, while the sum is 40.

The square root of 164538373 is about 12827.2511864390. The cubic root of 164538373 is about 547.9686755054.

The spelling of 164538373 in words is "one hundred sixty-four million, five hundred thirty-eight thousand, three hundred seventy-three".