6138877918 has 16 divisors (see below), whose sum is σ = 9242291520. Its totient is φ = 3058135200.

The previous prime is 6138877907. The next prime is 6138877991. The reversal of 6138877918 is 8197788316.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 649003 + ... + 658393.

It is an arithmetic number, because the mean of its divisors is an integer number (577643220).

Almost surely, 2^6138877918 is an apocalyptic number.

6138877918 is a deficient number, since it is larger than the sum of its proper divisors (3103413602).

6138877918 is a wasteful number, since it uses less digits than its factorization.

6138877918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10563.

The product of its digits is 4064256, while the sum is 58.

The square root of 6138877918 is about 78350.9918124844. The cubic root of 6138877918 is about 1831.0336778133.

The spelling of 6138877918 in words is "six billion, one hundred thirty-eight million, eight hundred seventy-seven thousand, nine hundred eighteen".