18068137 has 2 divisors, whose sum is σ = 18068138. Its totient is φ = 18068136.

The previous prime is 18068033. The next prime is 18068143. The reversal of 18068137 is 73186081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10361961 + 7706176 = 3219^2 + 2776^2 .

It is a cyclic number.

It is not a de Polignac number, because 18068137 - 2¹⁹ = 17543849 is a prime.

It is not a weakly prime, because it can be changed into another prime (18068147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9034068 + 9034069.

It is an arithmetic number, because the mean of its divisors is an integer number (9034069).

Almost surely, 2^18068137 is an apocalyptic number.

It is an amenable number.

18068137 is a deficient number, since it is larger than the sum of its proper divisors (1).

18068137 is an equidigital number, since it uses as much as digits as its factorization.

18068137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8064, while the sum is 34.

The square root of 18068137 is about 4250.6631247371. The cubic root of 18068137 is about 262.4044072186.

The spelling of 18068137 in words is "eighteen million, sixty-eight thousand, one hundred thirty-seven".