8098991863 has 4 divisors (see below), whose sum is σ = 8451121968. Its totient is φ = 7746861760.

The previous prime is 8098991843. The next prime is 8098991903. The reversal of 8098991863 is 3681998908.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8098991863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8098991843) 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, 176065018 + ... + 176065063.

It is an arithmetic number, because the mean of its divisors is an integer number (2112780492).

Almost surely, 2^8098991863 is an apocalyptic number.

8098991863 is a deficient number, since it is larger than the sum of its proper divisors (352130105).

8098991863 is a wasteful number, since it uses less digits than its factorization.

8098991863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352130104.

The product of its (nonzero) digits is 6718464, while the sum is 61.

The square root of 8098991863 is about 89994.3990646085. The cubic root of 8098991863 is about 2008.2155282555.

The spelling of 8098991863 in words is "eight billion, ninety-eight million, nine hundred ninety-one thousand, eight hundred sixty-three".