18866862458368 has 20 divisors (see below), whose sum is σ = 37696875577020. Its totient is φ = 9433431228928.

The previous prime is 18866862458293. The next prime is 18866862458387. The reversal of 18866862458368 is 86385426866881.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 18424669858 + ... + 18424670881.

It is an arithmetic number, because the mean of its divisors is an integer number (1884843778851).

Almost surely, 2^{18866862458368} is an apocalyptic number.

It is an amenable number.

18866862458368 is a deficient number, since it is larger than the sum of its proper divisors (18830013118652).

18866862458368 is an frugal number, since it uses more digits than its factorization.

18866862458368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36849340757 (or 36849340741 counting only the distinct ones).

The product of its digits is 5096079360, while the sum is 79.

The spelling of 18866862458368 in words is "eighteen trillion, eight hundred sixty-six billion, eight hundred sixty-two million, four hundred fifty-eight thousand, three hundred sixty-eight".