18518701627 has 2 divisors, whose sum is σ = 18518701628. Its totient is φ = 18518701626.

The previous prime is 18518701571. The next prime is 18518701637. The reversal of 18518701627 is 72610781581.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18518701627 is a prime.

It is not a weakly prime, because it can be changed into another prime (18518701637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9259350813 + 9259350814.

It is an arithmetic number, because the mean of its divisors is an integer number (9259350814).

Almost surely, 2^18518701627 is an apocalyptic number.

18518701627 is a deficient number, since it is larger than the sum of its proper divisors (1).

18518701627 is an equidigital number, since it uses as much as digits as its factorization.

18518701627 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 188160, while the sum is 46.

The spelling of 18518701627 in words is "eighteen billion, five hundred eighteen million, seven hundred one thousand, six hundred twenty-seven".