18241446191 has 2 divisors, whose sum is σ = 18241446192. Its totient is φ = 18241446190.

The previous prime is 18241446163. The next prime is 18241446203. The reversal of 18241446191 is 19164414281.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18241446191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18241446121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9120723095 + 9120723096.

It is an arithmetic number, because the mean of its divisors is an integer number (9120723096).

Almost surely, 2^18241446191 is an apocalyptic number.

18241446191 is a deficient number, since it is larger than the sum of its proper divisors (1).

18241446191 is an equidigital number, since it uses as much as digits as its factorization.

18241446191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 41.

The spelling of 18241446191 in words is "eighteen billion, two hundred forty-one million, four hundred forty-six thousand, one hundred ninety-one".