387930218 has 16 divisors (see below), whose sum is σ = 646872576. Its totient is φ = 173268720.

The previous prime is 387930217. The next prime is 387930223. The reversal of 387930218 is 812039783.

It is not an unprimeable number, because it can be changed into a prime (387930217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239846 + ... + 241457.

It is an arithmetic number, because the mean of its divisors is an integer number (40429536).

Almost surely, 2^387930218 is an apocalyptic number.

387930218 is a deficient number, since it is larger than the sum of its proper divisors (258942358).

387930218 is a wasteful number, since it uses less digits than its factorization.

387930218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481349.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 387930218 is about 19695.9442017894. The cubic root of 387930218 is about 729.3195748999.

The spelling of 387930218 in words is "three hundred eighty-seven million, nine hundred thirty thousand, two hundred eighteen".