18686867036 has 12 divisors (see below), whose sum is σ = 32714179512. Its totient is φ = 9339958608.

The previous prime is 18686867033. The next prime is 18686867051. The reversal of 18686867036 is 63076868681.

It is a super-2 number, since 2×18686867036² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18686867033) 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, 856610 + ... + 878153.

It is an arithmetic number, because the mean of its divisors is an integer number (2726181626).

Almost surely, 2^18686867036 is an apocalyptic number.

It is an amenable number.

18686867036 is a deficient number, since it is larger than the sum of its proper divisors (14027312476).

18686867036 is a wasteful number, since it uses less digits than its factorization.

18686867036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1737460 (or 1737458 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 59.

The spelling of 18686867036 in words is "eighteen billion, six hundred eighty-six million, eight hundred sixty-seven thousand, thirty-six".