18063161 has 2 divisors, whose sum is σ = 18063162. Its totient is φ = 18063160.

The previous prime is 18063151. The next prime is 18063169. The reversal of 18063161 is 16136081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15642025 + 2421136 = 3955^2 + 1556^2 .

It is a cyclic number.

It is not a de Polignac number, because 18063161 - 2¹⁰ = 18062137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18063161.

It is not a weakly prime, because it can be changed into another prime (18063169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9031580 + 9031581.

It is an arithmetic number, because the mean of its divisors is an integer number (9031581).

Almost surely, 2^18063161 is an apocalyptic number.

It is an amenable number.

18063161 is a deficient number, since it is larger than the sum of its proper divisors (1).

18063161 is an equidigital number, since it uses as much as digits as its factorization.

18063161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 18063161 is about 4250.0777639944. The cubic root of 18063161 is about 262.3803161125.

The spelling of 18063161 in words is "eighteen million, sixty-three thousand, one hundred sixty-one".