6391391960 has 16 divisors (see below), whose sum is σ = 14380632000. Its totient is φ = 2556556768.

The previous prime is 6391391921. The next prime is 6391392013. The reversal of 6391391960 is 691931936.

It is a congruent 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, 79892360 + ... + 79892439.

It is an arithmetic number, because the mean of its divisors is an integer number (898789500).

Almost surely, 2^6391391960 is an apocalyptic number.

It is an amenable number.

6391391960 is an abundant number, since it is smaller than the sum of its proper divisors (7989240040).

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

6391391960 is a wasteful number, since it uses less digits than its factorization.

6391391960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159784810 (or 159784806 counting only the distinct ones).

The product of its (nonzero) digits is 236196, while the sum is 47.

The square root of 6391391960 is about 79946.1816474058. The cubic root of 6391391960 is about 1855.8027645081.

The spelling of 6391391960 in words is "six billion, three hundred ninety-one million, three hundred ninety-one thousand, nine hundred sixty".