6381712918 has 16 divisors (see below), whose sum is σ = 10987858080. Its totient is φ = 2723075136.

The previous prime is 6381712903. The next prime is 6381712927. The reversal of 6381712918 is 8192171836.

It is a happy number.

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, 992071 + ... + 998482.

It is an arithmetic number, because the mean of its divisors is an integer number (686741130).

Almost surely, 2^6381712918 is an apocalyptic number.

6381712918 is a deficient number, since it is larger than the sum of its proper divisors (4606145162).

6381712918 is a wasteful number, since it uses less digits than its factorization.

6381712918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990791.

The product of its digits is 145152, while the sum is 46.

The square root of 6381712918 is about 79885.6239757818. The cubic root of 6381712918 is about 1854.8654899160.

The spelling of 6381712918 in words is "six billion, three hundred eighty-one million, seven hundred twelve thousand, nine hundred eighteen".