18107567227 has 4 divisors (see below), whose sum is σ = 18149580576. Its totient is φ = 18065553880.

The previous prime is 18107567173. The next prime is 18107567237. The reversal of 18107567227 is 72276570181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72276570181 = 271 ⋅266703211.

It is a cyclic number.

It is not a de Polignac number, because 18107567227 - 2⁷ = 18107567099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18107567237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21006028 + ... + 21006889.

It is an arithmetic number, because the mean of its divisors is an integer number (4537395144).

Almost surely, 2^18107567227 is an apocalyptic number.

18107567227 is a deficient number, since it is larger than the sum of its proper divisors (42013349).

18107567227 is an equidigital number, since it uses as much as digits as its factorization.

18107567227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42013348.

The product of its (nonzero) digits is 329280, while the sum is 46.

The spelling of 18107567227 in words is "eighteen billion, one hundred seven million, five hundred sixty-seven thousand, two hundred twenty-seven".