18488881488 has 480 divisors, whose sum is σ = 64878133248. Its totient is φ = 4470681600.

The previous prime is 18488881487. The next prime is 18488881519. The reversal of 18488881488 is 88418888481.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18488881483) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 55857483 + ... + 55857813.

Almost surely, 2^18488881488 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18488881488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32439066624).

18488881488 is an abundant number, since it is smaller than the sum of its proper divisors (46389251760).

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

18488881488 is a wasteful number, since it uses less digits than its factorization.

18488881488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511 (or 498 counting only the distinct ones).

The product of its digits is 33554432, while the sum is 66.

The spelling of 18488881488 in words is "eighteen billion, four hundred eighty-eight million, eight hundred eighty-one thousand, four hundred eighty-eight".