6381928536 has 32 divisors (see below), whose sum is σ = 15961228800. Its totient is φ = 2126455200.

The previous prime is 6381928523. The next prime is 6381928541. The reversal of 6381928536 is 6358291836.

It is a happy number.

It is a super-2 number, since 2×6381928536² = 81458023677222206592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9105 + ... + 113343.

It is an arithmetic number, because the mean of its divisors is an integer number (498788400).

Almost surely, 2^6381928536 is an apocalyptic number.

It is an amenable number.

6381928536 is an abundant number, since it is smaller than the sum of its proper divisors (9579300264).

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

6381928536 is a wasteful number, since it uses less digits than its factorization.

6381928536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106799 (or 106795 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 51.

The square root of 6381928536 is about 79886.9735063233. The cubic root of 6381928536 is about 1854.8863797037.

The spelling of 6381928536 in words is "six billion, three hundred eighty-one million, nine hundred twenty-eight thousand, five hundred thirty-six".