6391023842 has 48 divisors (see below), whose sum is σ = 11363976000. Its totient is φ = 2687063904.

The previous prime is 6391023839. The next prime is 6391023907. The reversal of 6391023842 is 2483201936.

It is a junction number, because it is equal to n+sod(n) for n = 6391023796 and 6391023805.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4098659 + ... + 4100217.

It is an arithmetic number, because the mean of its divisors is an integer number (236749500).

Almost surely, 2^6391023842 is an apocalyptic number.

6391023842 is a deficient number, since it is larger than the sum of its proper divisors (4972952158).

6391023842 is a wasteful number, since it uses less digits than its factorization.

6391023842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343 (or 2336 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 6391023842 is about 79943.8793279385. The cubic root of 6391023842 is about 1855.7671349446.

The spelling of 6391023842 in words is "six billion, three hundred ninety-one million, twenty-three thousand, eight hundred forty-two".