18509085060 has 192 divisors, whose sum is σ = 54762946560. Its totient is φ = 4664424960.

The previous prime is 18509085043. The next prime is 18509085079. The reversal of 18509085060 is 6058090581.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35389959 + ... + 35390481.

It is an arithmetic number, because the mean of its divisors is an integer number (285223680).

Almost surely, 2^18509085060 is an apocalyptic number.

18509085060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18509085060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27381473280).

18509085060 is an abundant number, since it is smaller than the sum of its proper divisors (36253861500).

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

18509085060 is a wasteful number, since it uses less digits than its factorization.

18509085060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978 (or 976 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 42.

The spelling of 18509085060 in words is "eighteen billion, five hundred nine million, eighty-five thousand, sixty".