164418399 has 6 divisors (see below), whose sum is σ = 237493256. Its totient is φ = 109612260.

The previous prime is 164418379. The next prime is 164418403. The reversal of 164418399 is 993814461.

It is a de Polignac number, because none of the positive numbers 2^k-164418399 is a prime.

It is a super-3 number, since 3×164418399³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164418379) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9134347 + ... + 9134364.

Almost surely, 2^164418399 is an apocalyptic number.

164418399 is a deficient number, since it is larger than the sum of its proper divisors (73074857).

164418399 is a wasteful number, since it uses less digits than its factorization.

164418399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18268717 (or 18268714 counting only the distinct ones).

The product of its digits is 186624, while the sum is 45.

The square root of 164418399 is about 12822.5738055977. The cubic root of 164418399 is about 547.8354583965.

The spelling of 164418399 in words is "one hundred sixty-four million, four hundred eighteen thousand, three hundred ninety-nine".