6331986542 has 16 divisors (see below), whose sum is σ = 10911670272. Its totient is φ = 2699499480.

The previous prime is 6331986449. The next prime is 6331986547. The reversal of 6331986542 is 2456891336.

6331986542 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6331986547) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1181318 + ... + 1186665.

It is an arithmetic number, because the mean of its divisors is an integer number (681979392).

Almost surely, 2^6331986542 is an apocalyptic number.

6331986542 is a deficient number, since it is larger than the sum of its proper divisors (4579683730).

6331986542 is a wasteful number, since it uses less digits than its factorization.

6331986542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2368183.

The product of its digits is 933120, while the sum is 47.

The square root of 6331986542 is about 79573.7804933258. The cubic root of 6331986542 is about 1850.0352116015.

The spelling of 6331986542 in words is "six billion, three hundred thirty-one million, nine hundred eighty-six thousand, five hundred forty-two".