18630227611 has 2 divisors, whose sum is σ = 18630227612. Its totient is φ = 18630227610.

The previous prime is 18630227593. The next prime is 18630227617. The reversal of 18630227611 is 11672203681.

It is a strong prime.

It is an emirp because it is prime and its reverse (11672203681) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18630227611 is a prime.

It is not a weakly prime, because it can be changed into another prime (18630227617) 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 as a sum of consecutive naturals, namely, 9315113805 + 9315113806.

It is an arithmetic number, because the mean of its divisors is an integer number (9315113806).

Almost surely, 2^18630227611 is an apocalyptic number.

18630227611 is a deficient number, since it is larger than the sum of its proper divisors (1).

18630227611 is an equidigital number, since it uses as much as digits as its factorization.

18630227611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 37.

The spelling of 18630227611 in words is "eighteen billion, six hundred thirty million, two hundred twenty-seven thousand, six hundred eleven".