8491812368 has 40 divisors (see below), whose sum is σ = 17835900096. Its totient is φ = 3893328000.

The previous prime is 8491812347. The next prime is 8491812403. The reversal of 8491812368 is 8632181948.

It is a super-2 number, since 2×8491812368² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103778 + ... + 166593.

Almost surely, 2^8491812368 is an apocalyptic number.

It is an amenable number.

8491812368 is an abundant number, since it is smaller than the sum of its proper divisors (9344087728).

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

8491812368 is a wasteful number, since it uses less digits than its factorization.

8491812368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270543 (or 270537 counting only the distinct ones).

The product of its digits is 663552, while the sum is 50.

The square root of 8491812368 is about 92151.0302058528. The cubic root of 8491812368 is about 2040.1720641745.

The spelling of 8491812368 in words is "eight billion, four hundred ninety-one million, eight hundred twelve thousand, three hundred sixty-eight".