18201838211 has 2 divisors, whose sum is σ = 18201838212. Its totient is φ = 18201838210.

The previous prime is 18201838199. The next prime is 18201838219. The reversal of 18201838211 is 11283810281.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18201838211 - 2⁶ = 18201838147 is a prime.

It is not a weakly prime, because it can be changed into another prime (18201838219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9100919105 + 9100919106.

It is an arithmetic number, because the mean of its divisors is an integer number (9100919106).

Almost surely, 2^18201838211 is an apocalyptic number.

18201838211 is a deficient number, since it is larger than the sum of its proper divisors (1).

18201838211 is an equidigital number, since it uses as much as digits as its factorization.

18201838211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6144, while the sum is 35.

The spelling of 18201838211 in words is "eighteen billion, two hundred one million, eight hundred thirty-eight thousand, two hundred eleven".