18647222882 has 32 divisors (see below), whose sum is σ = 28985973120. Its totient is φ = 8992023040.

The previous prime is 18647222873. The next prime is 18647222933. The reversal of 18647222882 is 28822274681.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18647222882.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2653169 + ... + 2660187.

It is an arithmetic number, because the mean of its divisors is an integer number (905811660).

Almost surely, 2^18647222882 is an apocalyptic number.

18647222882 is a deficient number, since it is larger than the sum of its proper divisors (10338750238).

18647222882 is a wasteful number, since it uses less digits than its factorization.

18647222882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7498.

The product of its digits is 1376256, while the sum is 50.

The spelling of 18647222882 in words is "eighteen billion, six hundred forty-seven million, two hundred twenty-two thousand, eight hundred eighty-two".