18864710636 has 12 divisors (see below), whose sum is σ = 33073600728. Its totient is φ = 9415110432.

The previous prime is 18864710629. The next prime is 18864710639. The reversal of 18864710636 is 63601746881.

It is not an unprimeable number, because it can be changed into a prime (18864710639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4308761 + ... + 4313136.

It is an arithmetic number, because the mean of its divisors is an integer number (2756133394).

Almost surely, 2^18864710636 is an apocalyptic number.

It is an amenable number.

18864710636 is a deficient number, since it is larger than the sum of its proper divisors (14208890092).

18864710636 is a wasteful number, since it uses less digits than its factorization.

18864710636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8622448 (or 8622446 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 50.

The spelling of 18864710636 in words is "eighteen billion, eight hundred sixty-four million, seven hundred ten thousand, six hundred thirty-six".