18241412081 has 2 divisors, whose sum is σ = 18241412082. Its totient is φ = 18241412080.

The previous prime is 18241412071. The next prime is 18241412083. The reversal of 18241412081 is 18021414281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13786517056 + 4454895025 = 117416^2 + 66745^2 .

It is a cyclic number.

It is not a de Polignac number, because 18241412081 - 2¹⁰ = 18241411057 is a prime.

It is a super-2 number, since 2×18241412081² (a number of 21 digits) contains 22 as substring.

Together with 18241412083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (18241412083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9120706040 + 9120706041.

It is an arithmetic number, because the mean of its divisors is an integer number (9120706041).

Almost surely, 2^18241412081 is an apocalyptic number.

It is an amenable number.

18241412081 is a deficient number, since it is larger than the sum of its proper divisors (1).

18241412081 is an equidigital number, since it uses as much as digits as its factorization.

18241412081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4096, while the sum is 32.

The spelling of 18241412081 in words is "eighteen billion, two hundred forty-one million, four hundred twelve thousand, eighty-one".