18221441341 has 2 divisors, whose sum is σ = 18221441342. Its totient is φ = 18221441340.

The previous prime is 18221441323. The next prime is 18221441369. The reversal of 18221441341 is 14314412281.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11458846116 + 6762595225 = 107046^2 + 82235^2 .

It is a cyclic number.

It is not a de Polignac number, because 18221441341 - 2⁹ = 18221440829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18221441321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9110720670 + 9110720671.

It is an arithmetic number, because the mean of its divisors is an integer number (9110720671).

Almost surely, 2^18221441341 is an apocalyptic number.

It is an amenable number.

18221441341 is a deficient number, since it is larger than the sum of its proper divisors (1).

18221441341 is an equidigital number, since it uses as much as digits as its factorization.

18221441341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 31.

The spelling of 18221441341 in words is "eighteen billion, two hundred twenty-one million, four hundred forty-one thousand, three hundred forty-one".