385381218 has 48 divisors (see below), whose sum is σ = 818790336. Its totient is φ = 120903840.

The previous prime is 385381207. The next prime is 385381229. The reversal of 385381218 is 812183583.

It is an interprime number because it is at equal distance from previous prime (385381207) and next prime (385381229).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 391555 + ... + 392537.

It is an arithmetic number, because the mean of its divisors is an integer number (17058132).

Almost surely, 2^385381218 is an apocalyptic number.

385381218 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

385381218 is an abundant number, since it is smaller than the sum of its proper divisors (433409118).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

385381218 is a wasteful number, since it uses less digits than its factorization.

385381218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207 (or 1188 counting only the distinct ones).

The product of its digits is 46080, while the sum is 39.

The square root of 385381218 is about 19631.1288009630. The cubic root of 385381218 is about 727.7186664514.

The spelling of 385381218 in words is "three hundred eighty-five million, three hundred eighty-one thousand, two hundred eighteen".