6858638205 has 16 divisors (see below), whose sum is σ = 11041149120. Its totient is φ = 3635497728.

The previous prime is 6858638191. The next prime is 6858638251. The reversal of 6858638205 is 5028368586.

It is not a de Polignac number, because 6858638205 - 2⁵ = 6858638173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1400140 + ... + 1405029.

It is an arithmetic number, because the mean of its divisors is an integer number (690071820).

Almost surely, 2^6858638205 is an apocalyptic number.

It is an amenable number.

6858638205 is a deficient number, since it is larger than the sum of its proper divisors (4182510915).

6858638205 is a wasteful number, since it uses less digits than its factorization.

6858638205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2805340.

The product of its (nonzero) digits is 2764800, while the sum is 51.

The square root of 6858638205 is about 82816.8956493782. The cubic root of 6858638205 is about 1899.9665926721.

The spelling of 6858638205 in words is "six billion, eight hundred fifty-eight million, six hundred thirty-eight thousand, two hundred five".