6889191928 has 32 divisors (see below), whose sum is σ = 13682790000. Its totient is φ = 3240617472.

The previous prime is 6889191887. The next prime is 6889191941. The reversal of 6889191928 is 8291919886.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364651 + ... + 383077.

Almost surely, 2^6889191928 is an apocalyptic number.

6889191928 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

6889191928 is a deficient number, since it is larger than the sum of its proper divisors (6793598072).

6889191928 is a wasteful number, since it uses less digits than its factorization.

6889191928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21199 (or 21195 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 61.

The square root of 6889191928 is about 83001.1561847183. The cubic root of 6889191928 is about 1902.7837245090.

The spelling of 6889191928 in words is "six billion, eight hundred eighty-nine million, one hundred ninety-one thousand, nine hundred twenty-eight".