6388038144 has 60 divisors (see below), whose sum is σ = 18436323906. Its totient is φ = 2129344512.

The previous prime is 6388038121. The next prime is 6388038227. The reversal of 6388038144 is 4418308836.

6388038144 is a `hidden beast` number, since 638 + 8 + 0 + 3 + 8 + 1 + 4 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6387206400 + 831744 = 79920^2 + 912^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6388038144.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 688539 + ... + 697754.

Almost surely, 2^6388038144 is an apocalyptic number.

6388038144 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6388038144 is an abundant number, since it is smaller than the sum of its proper divisors (12048285762).

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

6388038144 is a wasteful number, since it uses less digits than its factorization.

6388038144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1386317 (or 1386298 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 45.

The square root of 6388038144 is about 79925.2034342109. The cubic root of 6388038144 is about 1855.4781033585.

The spelling of 6388038144 in words is "six billion, three hundred eighty-eight million, thirty-eight thousand, one hundred forty-four".