388645564 has 12 divisors (see below), whose sum is σ = 680350384. Its totient is φ = 194259744.

The previous prime is 388645561. The next prime is 388645583. The reversal of 388645564 is 465546883.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388645561) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177 + ... + 27880.

Almost surely, 2^388645564 is an apocalyptic number.

It is an amenable number.

388645564 is a deficient number, since it is larger than the sum of its proper divisors (291704820).

388645564 is a wasteful number, since it uses less digits than its factorization.

388645564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31524 (or 31522 counting only the distinct ones).

The product of its digits is 2764800, while the sum is 49.

The square root of 388645564 is about 19714.0955663708. The cubic root of 388645564 is about 729.7675897421.

The spelling of 388645564 in words is "three hundred eighty-eight million, six hundred forty-five thousand, five hundred sixty-four".