388381868 has 24 divisors (see below), whose sum is σ = 793293312. Its totient is φ = 162907344.

The previous prime is 388381867. The next prime is 388381909. The reversal of 388381868 is 868183883.

It is not an unprimeable number, because it can be changed into a prime (388381867) 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, 146246 + ... + 148877.

It is an arithmetic number, because the mean of its divisors is an integer number (33053888).

Almost surely, 2^388381868 is an apocalyptic number.

It is an amenable number.

388381868 is an abundant number, since it is smaller than the sum of its proper divisors (404911444).

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

388381868 is a wasteful number, since it uses less digits than its factorization.

388381868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295181 (or 295179 counting only the distinct ones).

The product of its digits is 1769472, while the sum is 53.

The square root of 388381868 is about 19707.4064249967. The cubic root of 388381868 is about 729.6025033057.

The spelling of 388381868 in words is "three hundred eighty-eight million, three hundred eighty-one thousand, eight hundred sixty-eight".