18910002211 has 2 divisors, whose sum is σ = 18910002212. Its totient is φ = 18910002210.

The previous prime is 18910002203. The next prime is 18910002277. The reversal of 18910002211 is 11220001981.

It is a weak prime.

It is an emirp because it is prime and its reverse (11220001981) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18910002211 - 2³ = 18910002203 is a prime.

It is not a weakly prime, because it can be changed into another prime (18910002011) 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, 9455001105 + 9455001106.

It is an arithmetic number, because the mean of its divisors is an integer number (9455001106).

Almost surely, 2^18910002211 is an apocalyptic number.

18910002211 is a deficient number, since it is larger than the sum of its proper divisors (1).

18910002211 is an equidigital number, since it uses as much as digits as its factorization.

18910002211 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 25.

The spelling of 18910002211 in words is "eighteen billion, nine hundred ten million, two thousand, two hundred eleven".