388218948 has 96 divisors (see below), whose sum is σ = 1013166336. Its totient is φ = 114918912.

The previous prime is 388218937. The next prime is 388218949. The reversal of 388218948 is 849812883.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 388218948.

It is not an unprimeable number, because it can be changed into a prime (388218949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 594190 + ... + 594842.

It is an arithmetic number, because the mean of its divisors is an integer number (10553816).

Almost surely, 2^388218948 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388218948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (506583168).

388218948 is an abundant number, since it is smaller than the sum of its proper divisors (624947388).

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

388218948 is a wasteful number, since it uses less digits than its factorization.

388218948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813 (or 811 counting only the distinct ones).

The product of its digits is 884736, while the sum is 51.

The square root of 388218948 is about 19703.2725200663. The cubic root of 388218948 is about 729.5004701657.

The spelling of 388218948 in words is "three hundred eighty-eight million, two hundred eighteen thousand, nine hundred forty-eight".