18078203882 has 8 divisors (see below), whose sum is σ = 27778703652. Its totient is φ = 8818636000.

The previous prime is 18078203879. The next prime is 18078203893. The reversal of 18078203882 is 28830287081.

It can be written as a sum of positive squares in 2 ways, for example, as 15863654401 + 2214549481 = 125951^2 + 47059^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110232869 + ... + 110233032.

Almost surely, 2^18078203882 is an apocalyptic number.

18078203882 is a deficient number, since it is larger than the sum of its proper divisors (9700499770).

18078203882 is a wasteful number, since it uses less digits than its factorization.

18078203882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220465944.

The product of its (nonzero) digits is 344064, while the sum is 47.

The spelling of 18078203882 in words is "eighteen billion, seventy-eight million, two hundred three thousand, eight hundred eighty-two".