164366518 has 4 divisors (see below), whose sum is σ = 246549780. Its totient is φ = 82183258.

The previous prime is 164366497. The next prime is 164366551. The reversal of 164366518 is 815663461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 815663461 = 107 ⋅7623023.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41091628 + ... + 41091631.

It is an arithmetic number, because the mean of its divisors is an integer number (61637445).

Almost surely, 2^164366518 is an apocalyptic number.

164366518 is a deficient number, since it is larger than the sum of its proper divisors (82183262).

164366518 is an equidigital number, since it uses as much as digits as its factorization.

164366518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82183261.

The product of its digits is 103680, while the sum is 40.

The square root of 164366518 is about 12820.5506122007. The cubic root of 164366518 is about 547.7778305365. Note that the first 3 decimals are identical.

The spelling of 164366518 in words is "one hundred sixty-four million, three hundred sixty-six thousand, five hundred eighteen".