18860904866 has 32 divisors (see below), whose sum is σ = 30571803648. Its totient is φ = 8701355520.

The previous prime is 18860904859. The next prime is 18860904883. The reversal of 18860904866 is 66840906881.

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 15 ways as a sum of consecutive naturals, for example, 425210 + ... + 467466.

It is an arithmetic number, because the mean of its divisors is an integer number (955368864).

Almost surely, 2^18860904866 is an apocalyptic number.

18860904866 is a deficient number, since it is larger than the sum of its proper divisors (11710898782).

18860904866 is a wasteful number, since it uses less digits than its factorization.

18860904866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42626.

The product of its (nonzero) digits is 3981312, while the sum is 56.

The spelling of 18860904866 in words is "eighteen billion, eight hundred sixty million, nine hundred four thousand, eight hundred sixty-six".