18084245842 has 16 divisors (see below), whose sum is σ = 29222329752. Its totient is φ = 8343912960.

The previous prime is 18084245821. The next prime is 18084245869. The reversal of 18084245842 is 24854248081.

It can be written as a sum of positive squares in 4 ways, for example, as 8427056401 + 9657189441 = 91799^2 + 98271^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18084245792 and 18084245801.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26623 + ... + 192034.

Almost surely, 2^18084245842 is an apocalyptic number.

18084245842 is a deficient number, since it is larger than the sum of its proper divisors (11138083910).

18084245842 is a wasteful number, since it uses less digits than its factorization.

18084245842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221853.

The product of its (nonzero) digits is 655360, while the sum is 46.

The spelling of 18084245842 in words is "eighteen billion, eighty-four million, two hundred forty-five thousand, eight hundred forty-two".