18218218075 has 6 divisors (see below), whose sum is σ = 22590590444. Its totient is φ = 14574574440.

The previous prime is 18218218019. The next prime is 18218218127. The reversal of 18218218075 is 57081281281.

It is not a de Polignac number, because 18218218075 - 2⁷ = 18218217947 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 364364337 + ... + 364364386.

Almost surely, 2^18218218075 is an apocalyptic number.

18218218075 is a deficient number, since it is larger than the sum of its proper divisors (4372372369).

18218218075 is an equidigital number, since it uses as much as digits as its factorization.

18218218075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728728733 (or 728728728 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 43.

The spelling of 18218218075 in words is "eighteen billion, two hundred eighteen million, two hundred eighteen thousand, seventy-five".