388315942 has 8 divisors (see below), whose sum is σ = 665684496. Its totient is φ = 166421112.

The previous prime is 388315931. The next prime is 388315957. The reversal of 388315942 is 249513883.

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

It is a super-2 number, since 2×388315942² = 301578541622694728, which contains 22 as substring.

It is a congruent number.

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, 13868413 + ... + 13868440.

It is an arithmetic number, because the mean of its divisors is an integer number (83210562).

Almost surely, 2^388315942 is an apocalyptic number.

388315942 is a deficient number, since it is larger than the sum of its proper divisors (277368554).

388315942 is a wasteful number, since it uses less digits than its factorization.

388315942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27736862.

The product of its digits is 207360, while the sum is 43.

The square root of 388315942 is about 19705.7337341191. The cubic root of 388315942 is about 729.5612187690.

The spelling of 388315942 in words is "three hundred eighty-eight million, three hundred fifteen thousand, nine hundred forty-two".