164224415 has 4 divisors (see below), whose sum is σ = 197069304. Its totient is φ = 131379528.

The previous prime is 164224399. The next prime is 164224433. The reversal of 164224415 is 514422461.

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 164224415 - 2⁴ = 164224399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16422437 + ... + 16422446.

It is an arithmetic number, because the mean of its divisors is an integer number (49267326).

Almost surely, 2^164224415 is an apocalyptic number.

164224415 is a deficient number, since it is larger than the sum of its proper divisors (32844889).

164224415 is an equidigital number, since it uses as much as digits as its factorization.

164224415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32844888.

The product of its digits is 7680, while the sum is 29.

The square root of 164224415 is about 12815.0074131855. The cubic root of 164224415 is about 547.6199246621.

Adding to 164224415 its reverse (514422461), we get a palindrome (678646876).

The spelling of 164224415 in words is "one hundred sixty-four million, two hundred twenty-four thousand, four hundred fifteen".