3138205866 has 8 divisors (see below), whose sum is σ = 6276411744. Its totient is φ = 1046068620.

The previous prime is 3138205853. The next prime is 3138205871. The reversal of 3138205866 is 6685028313.

3138205866 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

3138205866 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 261517150 + ... + 261517161.

It is an arithmetic number, because the mean of its divisors is an integer number (784551468).

Almost surely, 2^3138205866 is an apocalyptic number.

3138205866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3138205866 is a wasteful number, since it uses less digits than its factorization.

3138205866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 523034316.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 3138205866 is about 56019.6917699482. The cubic root of 3138205866 is about 1464.0653982177.

The spelling of 3138205866 in words is "three billion, one hundred thirty-eight million, two hundred five thousand, eight hundred sixty-six".