164134505 has 4 divisors (see below), whose sum is σ = 196961412. Its totient is φ = 131307600.

The previous prime is 164134501. The next prime is 164134567. The reversal of 164134505 is 505431461.

It is a happy number.

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 107101801 + 57032704 = 10349^2 + 7552^2 .

It is not a de Polignac number, because 164134505 - 2² = 164134501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164134501) 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, 16413446 + ... + 16413455.

It is an arithmetic number, because the mean of its divisors is an integer number (49240353).

Almost surely, 2^164134505 is an apocalyptic number.

It is an amenable number.

164134505 is a deficient number, since it is larger than the sum of its proper divisors (32826907).

164134505 is an equidigital number, since it uses as much as digits as its factorization.

164134505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32826906.

The product of its (nonzero) digits is 7200, while the sum is 29.

The square root of 164134505 is about 12811.4989365023. The cubic root of 164134505 is about 547.5199689693.

Adding to 164134505 its reverse (505431461), we get a palindrome (669565966).

The spelling of 164134505 in words is "one hundred sixty-four million, one hundred thirty-four thousand, five hundred five".