6138888388 has 12 divisors (see below), whose sum is σ = 10743630352. Its totient is φ = 3069279720.

The previous prime is 6138888383. The next prime is 6138888389. The reversal of 6138888388 is 8838888316.

It is not an unprimeable number, because it can be changed into a prime (6138888383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87703 + ... + 141313.

Almost surely, 2^6138888388 is an apocalyptic number.

It is an amenable number.

6138888388 is a deficient number, since it is larger than the sum of its proper divisors (4604741964).

6138888388 is a wasteful number, since it uses less digits than its factorization.

6138888388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82242 (or 82240 counting only the distinct ones).

The product of its digits is 14155776, while the sum is 61.

The square root of 6138888388 is about 78351.0586271813. The cubic root of 6138888388 is about 1831.0347187696.

The spelling of 6138888388 in words is "six billion, one hundred thirty-eight million, eight hundred eighty-eight thousand, three hundred eighty-eight".