18063361 has 2 divisors, whose sum is σ = 18063362. Its totient is φ = 18063360.

The previous prime is 18063343. The next prime is 18063379. The reversal of 18063361 is 16336081.

It is a balanced prime because it is at equal distance from previous prime (18063343) and next prime (18063379).

It can be written as a sum of positive squares in only one way, i.e., 15752961 + 2310400 = 3969^2 + 1520^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18063361 is a prime.

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 (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9031680 + 9031681.

It is an arithmetic number, because the mean of its divisors is an integer number (9031681).

It is a Proth number, since it is equal to 2205 ⋅ 2¹³ + 1 and 2205 < 2¹³.

Almost surely, 2^18063361 is an apocalyptic number.

It is an amenable number.

18063361 is a deficient number, since it is larger than the sum of its proper divisors (1).

18063361 is an equidigital number, since it uses as much as digits as its factorization.

18063361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 18063361 is about 4250.1012929106. The cubic root of 18063361 is about 262.3812844899.

The spelling of 18063361 in words is "eighteen million, sixty-three thousand, three hundred sixty-one".