18734047827 has 8 divisors (see below), whose sum is σ = 27249524160. Its totient is φ = 11353968360.

The previous prime is 18734047819. The next prime is 18734047831. The reversal of 18734047827 is 72874043781.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 18734047827 - 2³ = 18734047819 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18734047827.

It is not an unprimeable number, because it can be changed into a prime (18734047817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 283849177 + ... + 283849242.

It is an arithmetic number, because the mean of its divisors is an integer number (3406190520).

Almost surely, 2^18734047827 is an apocalyptic number.

18734047827 is a deficient number, since it is larger than the sum of its proper divisors (8515476333).

18734047827 is a wasteful number, since it uses less digits than its factorization.

18734047827 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 567698433.

The product of its (nonzero) digits is 2107392, while the sum is 51.

The spelling of 18734047827 in words is "eighteen billion, seven hundred thirty-four million, forty-seven thousand, eight hundred twenty-seven".