8186491804 has 12 divisors (see below), whose sum is σ = 14353756984. Its totient is φ = 4085418384.

The previous prime is 8186491801. The next prime is 8186491843. The reversal of 8186491804 is 4081946818.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8186491801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1954527 + ... + 1958710.

Almost surely, 2^8186491804 is an apocalyptic number.

It is an amenable number.

8186491804 is a deficient number, since it is larger than the sum of its proper divisors (6167265180).

8186491804 is a wasteful number, since it uses less digits than its factorization.

8186491804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3913764 (or 3913762 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 49.

The square root of 8186491804 is about 90479.2341037434. The cubic root of 8186491804 is about 2015.4217626378.

The spelling of 8186491804 in words is "eight billion, one hundred eighty-six million, four hundred ninety-one thousand, eight hundred four".