18271802306 has 16 divisors (see below), whose sum is σ = 27479789568. Its totient is φ = 9111891600.

The previous prime is 18271802281. The next prime is 18271802309. The reversal of 18271802306 is 60320817281.

It is a self number, because there is not a number n which added to its sum of digits gives 18271802306.

It is not an unprimeable number, because it can be changed into a prime (18271802309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3300761 + ... + 3306291.

It is an arithmetic number, because the mean of its divisors is an integer number (1717486848).

Almost surely, 2^18271802306 is an apocalyptic number.

18271802306 is a deficient number, since it is larger than the sum of its proper divisors (9207987262).

18271802306 is a wasteful number, since it uses less digits than its factorization.

18271802306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9577.

The product of its (nonzero) digits is 32256, while the sum is 38.

The spelling of 18271802306 in words is "eighteen billion, two hundred seventy-one million, eight hundred two thousand, three hundred six".