18679540528 has 120 divisors (see below), whose sum is σ = 43697203200. Its totient is φ = 7693741440.

The previous prime is 18679540519. The next prime is 18679540531. The reversal of 18679540528 is 82504597681.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 834993 + ... + 857071.

It is an arithmetic number, because the mean of its divisors is an integer number (364143360).

Almost surely, 2^18679540528 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 18679540528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21848601600).

18679540528 is an abundant number, since it is smaller than the sum of its proper divisors (25017662672).

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

18679540528 is a wasteful number, since it uses less digits than its factorization.

18679540528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22151 (or 22134 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 18679540528 in words is "eighteen billion, six hundred seventy-nine million, five hundred forty thousand, five hundred twenty-eight".