12018481 has 2 divisors, whose sum is σ = 12018482. Its totient is φ = 12018480.

The previous prime is 12018437. The next prime is 12018491. The reversal of 12018481 is 18481021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6330256 + 5688225 = 2516^2 + 2385^2 .

It is a cyclic number.

It is not a de Polignac number, because 12018481 - 2⁷ = 12018353 is a prime.

It is a super-2 number, since 2×12018481² = 288887771094722, which contains 22 as substring.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (12018401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6009240 + 6009241.

It is an arithmetic number, because the mean of its divisors is an integer number (6009241).

Almost surely, 2^12018481 is an apocalyptic number.

It is an amenable number.

12018481 is a deficient number, since it is larger than the sum of its proper divisors (1).

12018481 is an equidigital number, since it uses as much as digits as its factorization.

12018481 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 12018481 is about 3466.7680914650. The cubic root of 12018481 is about 229.0603185818.

The spelling of 12018481 in words is "twelve million, eighteen thousand, four hundred eighty-one".