18404684027 has 2 divisors, whose sum is σ = 18404684028. Its totient is φ = 18404684026.

The previous prime is 18404683937. The next prime is 18404684047. The reversal of 18404684027 is 72048640481.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18404684027 is a prime.

It is not a weakly prime, because it can be changed into another prime (18404684047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9202342013 + 9202342014.

It is an arithmetic number, because the mean of its divisors is an integer number (9202342014).

Almost surely, 2^18404684027 is an apocalyptic number.

18404684027 is a deficient number, since it is larger than the sum of its proper divisors (1).

18404684027 is an equidigital number, since it uses as much as digits as its factorization.

18404684027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 344064, while the sum is 44.

The spelling of 18404684027 in words is "eighteen billion, four hundred four million, six hundred eighty-four thousand, twenty-seven".