388918378 has 8 divisors (see below), whose sum is σ = 584400960. Its totient is φ = 194118060.

The previous prime is 388918349. The next prime is 388918403. The reversal of 388918378 is 873819883.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 169138 + ... + 171421.

It is an arithmetic number, because the mean of its divisors is an integer number (73050120).

Almost surely, 2^388918378 is an apocalyptic number.

388918378 is a deficient number, since it is larger than the sum of its proper divisors (195482582).

388918378 is a wasteful number, since it uses less digits than its factorization.

388918378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341132.

The product of its digits is 2322432, while the sum is 55.

The square root of 388918378 is about 19721.0136149235. The cubic root of 388918378 is about 729.9383059140.

The spelling of 388918378 in words is "three hundred eighty-eight million, nine hundred eighteen thousand, three hundred seventy-eight".