18109005488 has 160 divisors (see below), whose sum is σ = 43165094400. Its totient is φ = 7187761152.

The previous prime is 18109005463. The next prime is 18109005491. The reversal of 18109005488 is 88450090181.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22384028 + ... + 22384836.

It is an arithmetic number, because the mean of its divisors is an integer number (269781840).

Almost surely, 2^18109005488 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 18109005488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21582547200).

18109005488 is an abundant number, since it is smaller than the sum of its proper divisors (25056088912).

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

18109005488 is a wasteful number, since it uses less digits than its factorization.

18109005488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1067 (or 1061 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 44.

The spelling of 18109005488 in words is "eighteen billion, one hundred nine million, five thousand, four hundred eighty-eight".