18546346884 has 192 divisors, whose sum is σ = 50229688320. Its totient is φ = 5281182720.

The previous prime is 18546346859. The next prime is 18546346891. The reversal of 18546346884 is 48864364581.

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, 20447559 + ... + 20448465.

It is an arithmetic number, because the mean of its divisors is an integer number (261612960).

Almost surely, 2^18546346884 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 18546346884, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25114844160).

18546346884 is an abundant number, since it is smaller than the sum of its proper divisors (31683341436).

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

18546346884 is a wasteful number, since it uses less digits than its factorization.

18546346884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130 (or 1128 counting only the distinct ones).

The product of its digits is 17694720, while the sum is 57.

The spelling of 18546346884 in words is "eighteen billion, five hundred forty-six million, three hundred forty-six thousand, eight hundred eighty-four".