18443600842 has 16 divisors (see below), whose sum is σ = 27793912320. Its totient is φ = 9178999312.

The previous prime is 18443600839. The next prime is 18443600881. The reversal of 18443600842 is 24800634481.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 18443600795 and 18443600804.

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, 1207968 + ... + 1223140.

It is an arithmetic number, because the mean of its divisors is an integer number (1737119520).

Almost surely, 2^18443600842 is an apocalyptic number.

18443600842 is a deficient number, since it is larger than the sum of its proper divisors (9350311478).

18443600842 is a wasteful number, since it uses less digits than its factorization.

18443600842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17957.

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 18443600842 in words is "eighteen billion, four hundred forty-three million, six hundred thousand, eight hundred forty-two".