8191863498 has 32 divisors (see below), whose sum is σ = 20164588416. Its totient is φ = 2160491328.

The previous prime is 8191863487. The next prime is 8191863523. The reversal of 8191863498 is 8943681918.

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 15 ways as a sum of consecutive naturals, for example, 7501161 + ... + 7502252.

It is an arithmetic number, because the mean of its divisors is an integer number (630143388).

Almost surely, 2^8191863498 is an apocalyptic number.

8191863498 is an abundant number, since it is smaller than the sum of its proper divisors (11972724918).

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

8191863498 is a wasteful number, since it uses less digits than its factorization.

8191863498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15003438.

The product of its digits is 2985984, while the sum is 57.

The square root of 8191863498 is about 90508.9139145974. The cubic root of 8191863498 is about 2015.8624830415.

The spelling of 8191863498 in words is "eight billion, one hundred ninety-one million, eight hundred sixty-three thousand, four hundred ninety-eight".