18488660508 has 60 divisors (see below), whose sum is σ = 48713693952. Its totient is φ = 6114346560.

The previous prime is 18488660501. The next prime is 18488660527. The reversal of 18488660508 is 80506688481.

18488660508 is a `hidden beast` number, since 18 + 48 + 86 + 6 + 0 + 508 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18488660501) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 183513 + ... + 265808.

Almost surely, 2^18488660508 is an apocalyptic number.

18488660508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18488660508 is an abundant number, since it is smaller than the sum of its proper divisors (30225033444).

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

18488660508 is a wasteful number, since it uses less digits than its factorization.

18488660508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449464 (or 449453 counting only the distinct ones).

The product of its (nonzero) digits is 2949120, while the sum is 54.

The spelling of 18488660508 in words is "eighteen billion, four hundred eighty-eight million, six hundred sixty thousand, five hundred eight".