18701149211 has 2 divisors, whose sum is σ = 18701149212. Its totient is φ = 18701149210.

The previous prime is 18701149151. The next prime is 18701149261. The reversal of 18701149211 is 11294110781.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18701149211 - 2⁶ = 18701149147 is a prime.

It is not a weakly prime, because it can be changed into another prime (18701149261) 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, 9350574605 + 9350574606.

It is an arithmetic number, because the mean of its divisors is an integer number (9350574606).

Almost surely, 2^18701149211 is an apocalyptic number.

18701149211 is a deficient number, since it is larger than the sum of its proper divisors (1).

18701149211 is an equidigital number, since it uses as much as digits as its factorization.

18701149211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 35.

Adding to 18701149211 its reverse (11294110781), we get a palindrome (29995259992).

The spelling of 18701149211 in words is "eighteen billion, seven hundred one million, one hundred forty-nine thousand, two hundred eleven".