6391314138 has 72 divisors (see below), whose sum is σ = 14207260032. Its totient is φ = 1915364000.

The previous prime is 6391314133. The next prime is 6391314173. The reversal of 6391314138 is 8314131936.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 6391314096 and 6391314105.

It is not an unprimeable number, because it can be changed into a prime (6391314133) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7405495 + ... + 7406357.

It is an arithmetic number, because the mean of its divisors is an integer number (197323056).

Almost surely, 2^6391314138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6391314138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7103630016).

6391314138 is an abundant number, since it is smaller than the sum of its proper divisors (7815945894).

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

6391314138 is a wasteful number, since it uses less digits than its factorization.

6391314138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092 (or 980 counting only the distinct ones).

The product of its digits is 46656, while the sum is 39.

The square root of 6391314138 is about 79945.6949309968. The cubic root of 6391314138 is about 1855.7952323529.

The spelling of 6391314138 in words is "six billion, three hundred ninety-one million, three hundred fourteen thousand, one hundred thirty-eight".