18316485794 has 4 divisors (see below), whose sum is σ = 27474728694. Its totient is φ = 9158242896.

The previous prime is 18316485787. The next prime is 18316485839. The reversal of 18316485794 is 49758461381.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49758461381 = 601 ⋅82792781.

It can be written as a sum of positive squares in only one way, i.e., 17259390625 + 1057095169 = 131375^2 + 32513^2 .

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 as a sum of consecutive naturals, namely, 4579121447 + ... + 4579121450.

Almost surely, 2^18316485794 is an apocalyptic number.

18316485794 is a deficient number, since it is larger than the sum of its proper divisors (9158242900).

18316485794 is an equidigital number, since it uses as much as digits as its factorization.

18316485794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9158242899.

The product of its digits is 5806080, while the sum is 56.

The spelling of 18316485794 in words is "eighteen billion, three hundred sixteen million, four hundred eighty-five thousand, seven hundred ninety-four".