164238518 has 8 divisors (see below), whose sum is σ = 246861000. Its totient is φ = 81951520.

The previous prime is 164238517. The next prime is 164238533. The reversal of 164238518 is 815832461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164238511) 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, 82643 + ... + 84606.

It is an arithmetic number, because the mean of its divisors is an integer number (30857625).

Almost surely, 2^164238518 is an apocalyptic number.

164238518 is a deficient number, since it is larger than the sum of its proper divisors (82622482).

164238518 is a wasteful number, since it uses less digits than its factorization.

164238518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167742.

The product of its digits is 46080, while the sum is 38.

The square root of 164238518 is about 12815.5576546633. The cubic root of 164238518 is about 547.6356000875.

The spelling of 164238518 in words is "one hundred sixty-four million, two hundred thirty-eight thousand, five hundred eighteen".