386681218 has 64 divisors (see below), whose sum is σ = 772374528. Its totient is φ = 140555520.

The previous prime is 386681213. The next prime is 386681231. The reversal of 386681218 is 812186683.

It is not an unprimeable number, because it can be changed into a prime (386681213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 331905 + ... + 333067.

It is an arithmetic number, because the mean of its divisors is an integer number (12068352).

Almost surely, 2^386681218 is an apocalyptic number.

386681218 is a deficient number, since it is larger than the sum of its proper divisors (385693310).

386681218 is a wasteful number, since it uses less digits than its factorization.

386681218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1327.

The product of its digits is 110592, while the sum is 43.

The square root of 386681218 is about 19664.2116038249. The cubic root of 386681218 is about 728.5360151477.

The spelling of 386681218 in words is "three hundred eighty-six million, six hundred eighty-one thousand, two hundred eighteen".