6138193686 has 16 divisors (see below), whose sum is σ = 12477640368. Its totient is φ = 2012522400.

The previous prime is 6138193673. The next prime is 6138193687. The reversal of 6138193686 is 6863918316.

6138193686 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6138193687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8385145 + ... + 8385876.

It is an arithmetic number, because the mean of its divisors is an integer number (779852523).

Almost surely, 2^6138193686 is an apocalyptic number.

6138193686 is an abundant number, since it is smaller than the sum of its proper divisors (6339446682).

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

6138193686 is a wasteful number, since it uses less digits than its factorization.

6138193686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16771087.

The product of its digits is 1119744, while the sum is 51.

The square root of 6138193686 is about 78346.6252368282. The cubic root of 6138193686 is about 1830.9656470101.

The spelling of 6138193686 in words is "six billion, one hundred thirty-eight million, one hundred ninety-three thousand, six hundred eighty-six".