18864863518 has 8 divisors (see below), whose sum is σ = 29961842112. Its totient is φ = 8877582816.

The previous prime is 18864863503. The next prime is 18864863519. The reversal of 18864863518 is 81536846881.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18864863519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277424430 + ... + 277424497.

It is an arithmetic number, because the mean of its divisors is an integer number (3745230264).

Almost surely, 2^18864863518 is an apocalyptic number.

18864863518 is a deficient number, since it is larger than the sum of its proper divisors (11096978594).

18864863518 is a wasteful number, since it uses less digits than its factorization.

18864863518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554848946.

The product of its digits is 8847360, while the sum is 58.

The spelling of 18864863518 in words is "eighteen billion, eight hundred sixty-four million, eight hundred sixty-three thousand, five hundred eighteen".