18063541 has 2 divisors, whose sum is σ = 18063542. Its totient is φ = 18063540.

The previous prime is 18063527. The next prime is 18063553. The reversal of 18063541 is 14536081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17189316 + 874225 = 4146^2 + 935^2 .

It is a cyclic number.

It is not a de Polignac number, because 18063541 - 2⁷ = 18063413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18063341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9031770 + 9031771.

It is an arithmetic number, because the mean of its divisors is an integer number (9031771).

Almost surely, 2^18063541 is an apocalyptic number.

It is an amenable number.

18063541 is a deficient number, since it is larger than the sum of its proper divisors (1).

18063541 is an equidigital number, since it uses as much as digits as its factorization.

18063541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 18063541 is about 4250.1224688237. The cubic root of 18063541 is about 262.3821560234.

The spelling of 18063541 in words is "eighteen million, sixty-three thousand, five hundred forty-one".