18222786667 has 4 divisors (see below), whose sum is σ = 18223062880. Its totient is φ = 18222510456.

The previous prime is 18222786653. The next prime is 18222786683. The reversal of 18222786667 is 76668722281.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 18222786667 - 2³¹ = 16075303019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18222786607) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 25309 + ... + 192577.

It is an arithmetic number, because the mean of its divisors is an integer number (4555765720).

Almost surely, 2^18222786667 is an apocalyptic number.

18222786667 is a deficient number, since it is larger than the sum of its proper divisors (276213).

18222786667 is a wasteful number, since it uses less digits than its factorization.

18222786667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276212.

The product of its digits is 5419008, while the sum is 55.

The spelling of 18222786667 in words is "eighteen billion, two hundred twenty-two million, seven hundred eighty-six thousand, six hundred sixty-seven".