18488766336 has 64 divisors (see below), whose sum is σ = 49128989520. Its totient is φ = 6160637952.

The previous prime is 18488766293. The next prime is 18488766341. The reversal of 18488766336 is 63366788481.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 18488766336.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1264926 + ... + 1279458.

Almost surely, 2^18488766336 is an apocalyptic number.

18488766336 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18488766336 is an abundant number, since it is smaller than the sum of its proper divisors (30640223184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18488766336 is a wasteful number, since it uses less digits than its factorization.

18488766336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17863 (or 17851 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 60.

The spelling of 18488766336 in words is "eighteen billion, four hundred eighty-eight million, seven hundred sixty-six thousand, three hundred thirty-six".