164040115 has 4 divisors (see below), whose sum is σ = 196848144. Its totient is φ = 131232088.

The previous prime is 164040113. The next prime is 164040131. The reversal of 164040115 is 511040461.

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 164040115 - 2¹ = 164040113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164040113) 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, 16404007 + ... + 16404016.

It is an arithmetic number, because the mean of its divisors is an integer number (49212036).

Almost surely, 2^164040115 is an apocalyptic number.

164040115 is a deficient number, since it is larger than the sum of its proper divisors (32808029).

164040115 is an equidigital number, since it uses as much as digits as its factorization.

164040115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32808028.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 164040115 is about 12807.8146067157. The cubic root of 164040115 is about 547.4149934396.

Adding to 164040115 its reverse (511040461), we get a palindrome (675080576).

The spelling of 164040115 in words is "one hundred sixty-four million, forty thousand, one hundred fifteen".