8191403068 has 12 divisors (see below), whose sum is σ = 14354897760. Its totient is φ = 4090003712.

The previous prime is 8191403053. The next prime is 8191403069. The reversal of 8191403068 is 8603041918.

It is a self number, because there is not a number n which added to its sum of digits gives 8191403068.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8191403069) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1421221 + ... + 1426972.

It is an arithmetic number, because the mean of its divisors is an integer number (1196241480).

Almost surely, 2^8191403068 is an apocalyptic number.

It is an amenable number.

8191403068 is a deficient number, since it is larger than the sum of its proper divisors (6163494692).

8191403068 is a wasteful number, since it uses less digits than its factorization.

8191403068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2848916 (or 2848914 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 8191403068 is about 90506.3703172324. The cubic root of 8191403068 is about 2015.8247146325.

The spelling of 8191403068 in words is "eight billion, one hundred ninety-one million, four hundred three thousand, sixty-eight".