8991549218 has 8 divisors (see below), whose sum is σ = 13508171712. Its totient is φ = 4488825316.

The previous prime is 8991549197. The next prime is 8991549233. The reversal of 8991549218 is 8129451998.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3473030 + ... + 3475617.

It is an arithmetic number, because the mean of its divisors is an integer number (1688521464).

Almost surely, 2^8991549218 is an apocalyptic number.

8991549218 is a deficient number, since it is larger than the sum of its proper divisors (4516622494).

8991549218 is a wasteful number, since it uses less digits than its factorization.

8991549218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6949296.

The product of its digits is 1866240, while the sum is 56.

The square root of 8991549218 is about 94823.7798128718. The cubic root of 8991549218 is about 2079.4325697305.

The spelling of 8991549218 in words is "eight billion, nine hundred ninety-one million, five hundred forty-nine thousand, two hundred eighteen".