18108284727 has 32 divisors (see below), whose sum is σ = 26903166976. Its totient is φ = 10758873600.

The previous prime is 18108284699. The next prime is 18108284731. The reversal of 18108284727 is 72748280181.

It is not a de Polignac number, because 18108284727 - 2¹⁹ = 18107760439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18108284797) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 506202 + ... + 540792.

It is an arithmetic number, because the mean of its divisors is an integer number (840723968).

Almost surely, 2^18108284727 is an apocalyptic number.

18108284727 is a deficient number, since it is larger than the sum of its proper divisors (8794882249).

18108284727 is a wasteful number, since it uses less digits than its factorization.

18108284727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35071.

The product of its (nonzero) digits is 401408, while the sum is 48.

The spelling of 18108284727 in words is "eighteen billion, one hundred eight million, two hundred eighty-four thousand, seven hundred twenty-seven".