18528494908 has 48 divisors (see below), whose sum is σ = 40486328064. Its totient is φ = 7208087040.

The previous prime is 18528494903. The next prime is 18528494953. The reversal of 18528494908 is 80949482581.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18528494903) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162591 + ... + 251977.

It is an arithmetic number, because the mean of its divisors is an integer number (843465168).

Almost surely, 2^18528494908 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 18528494908, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20243164032).

18528494908 is an abundant number, since it is smaller than the sum of its proper divisors (21957833156).

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

18528494908 is a wasteful number, since it uses less digits than its factorization.

18528494908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90082 (or 90080 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 58.

The spelling of 18528494908 in words is "eighteen billion, five hundred twenty-eight million, four hundred ninety-four thousand, nine hundred eight".