387878904018 has 16 divisors (see below), whose sum is σ = 861953120160. Its totient is φ = 129292967988.

The previous prime is 387878904013. The next prime is 387878904019. The reversal of 387878904018 is 810409878783.

387878904018 is a `hidden beast` number, since 3 + 8 + 78 + 78 + 90 + 401 + 8 = 666.

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (387878904013) 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, 3591471280 + ... + 3591471387.

It is an arithmetic number, because the mean of its divisors is an integer number (53872070010).

Almost surely, 2^387878904018 is an apocalyptic number.

387878904018 is an abundant number, since it is smaller than the sum of its proper divisors (474074216142).

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

387878904018 is a wasteful number, since it uses less digits than its factorization.

387878904018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7182942678 (or 7182942672 counting only the distinct ones).

The product of its (nonzero) digits is 21676032, while the sum is 63.

The spelling of 387878904018 in words is "three hundred eighty-seven billion, eight hundred seventy-eight million, nine hundred four thousand, eighteen".