18019622611 has 2 divisors, whose sum is σ = 18019622612. Its totient is φ = 18019622610.

The previous prime is 18019622567. The next prime is 18019622623. The reversal of 18019622611 is 11622691081.

It is a strong prime.

It is an emirp because it is prime and its reverse (11622691081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18019622611 - 2⁷ = 18019622483 is a prime.

It is not a weakly prime, because it can be changed into another prime (18019622641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9009811305 + 9009811306.

It is an arithmetic number, because the mean of its divisors is an integer number (9009811306).

Almost surely, 2^18019622611 is an apocalyptic number.

18019622611 is a deficient number, since it is larger than the sum of its proper divisors (1).

18019622611 is an equidigital number, since it uses as much as digits as its factorization.

18019622611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 37.

The spelling of 18019622611 in words is "eighteen billion, nineteen million, six hundred twenty-two thousand, six hundred eleven".