18191600842 has 16 divisors (see below), whose sum is σ = 27647684064. Its totient is φ = 8976474000.

The previous prime is 18191600797. The next prime is 18191600879. The reversal of 18191600842 is 24800619181.

It is a junction number, because it is equal to n+sod(n) for n = 18191600795 and 18191600804.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144384 + ... + 239227.

It is an arithmetic number, because the mean of its divisors is an integer number (1727980254).

Almost surely, 2^18191600842 is an apocalyptic number.

18191600842 is a deficient number, since it is larger than the sum of its proper divisors (9456083222).

18191600842 is a wasteful number, since it uses less digits than its factorization.

18191600842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 383925.

The product of its (nonzero) digits is 27648, while the sum is 40.

The spelling of 18191600842 in words is "eighteen billion, one hundred ninety-one million, six hundred thousand, eight hundred forty-two".