18056308842 has 96 divisors (see below), whose sum is σ = 46102545216. Its totient is φ = 5035219200.

The previous prime is 18056308841. The next prime is 18056308867. The reversal of 18056308842 is 24880365081.

18056308842 is a `hidden beast` number, since 1 + 8 + 0 + 5 + 630 + 8 + 8 + 4 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (18056308841) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 841398 + ... + 862590.

It is an arithmetic number, because the mean of its divisors is an integer number (480234846).

Almost surely, 2^18056308842 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18056308842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23051272608).

18056308842 is an abundant number, since it is smaller than the sum of its proper divisors (28046236374).

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

18056308842 is a wasteful number, since it uses less digits than its factorization.

18056308842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21556 (or 21553 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 18056308842 in words is "eighteen billion, fifty-six million, three hundred eight thousand, eight hundred forty-two".