164132405 has 4 divisors (see below), whose sum is σ = 196958892. Its totient is φ = 131305920.

The previous prime is 164132401. The next prime is 164132453. The reversal of 164132405 is 504231461.

164132405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 78180964 + 85951441 = 8842^2 + 9271^2 .

It is not a de Polignac number, because 164132405 - 2² = 164132401 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 (164132401) 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, 16413236 + ... + 16413245.

It is an arithmetic number, because the mean of its divisors is an integer number (49239723).

Almost surely, 2^164132405 is an apocalyptic number.

It is an amenable number.

164132405 is a deficient number, since it is larger than the sum of its proper divisors (32826487).

164132405 is an equidigital number, since it uses as much as digits as its factorization.

164132405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32826486.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 164132405 is about 12811.4169786172. The cubic root of 164132405 is about 547.5176338989.

Adding to 164132405 its reverse (504231461), we get a palindrome (668363866).

The spelling of 164132405 in words is "one hundred sixty-four million, one hundred thirty-two thousand, four hundred five".