8618391908 has 12 divisors (see below), whose sum is σ = 17236783872. Its totient is φ = 3693596520.

The previous prime is 8618391889. The next prime is 8618391949. The reversal of 8618391908 is 8091938168.

8618391908 is an admirable number.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 8618391908.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153899828 + ... + 153899883.

It is an arithmetic number, because the mean of its divisors is an integer number (1436398656).

Almost surely, 2^8618391908 is an apocalyptic number.

It is an amenable number.

8618391908 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8618391908 is a wasteful number, since it uses less digits than its factorization.

8618391908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307799722 (or 307799720 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 53.

The square root of 8618391908 is about 92835.2945166869. The cubic root of 8618391908 is about 2050.2590914252.

The spelling of 8618391908 in words is "eight billion, six hundred eighteen million, three hundred ninety-one thousand, nine hundred eight".