164315215 has 4 divisors (see below), whose sum is σ = 197178264. Its totient is φ = 131452168.

The previous prime is 164315209. The next prime is 164315219. The reversal of 164315215 is 512513461.

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

It is a cyclic number.

It is not a de Polignac number, because 164315215 - 2²³ = 155926607 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 (164315219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16431517 + ... + 16431526.

It is an arithmetic number, because the mean of its divisors is an integer number (49294566).

Almost surely, 2^164315215 is an apocalyptic number.

164315215 is a deficient number, since it is larger than the sum of its proper divisors (32863049).

164315215 is an equidigital number, since it uses as much as digits as its factorization.

164315215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32863048.

The product of its digits is 3600, while the sum is 28.

The square root of 164315215 is about 12818.5496449481. The cubic root of 164315215 is about 547.7208327758.

Adding to 164315215 its reverse (512513461), we get a palindrome (676828676).

The spelling of 164315215 in words is "one hundred sixty-four million, three hundred fifteen thousand, two hundred fifteen".