18086137 has 2 divisors, whose sum is σ = 18086138. Its totient is φ = 18086136.

The previous prime is 18086093. The next prime is 18086143. The reversal of 18086137 is 73168081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14318656 + 3767481 = 3784^2 + 1941^2 .

It is a cyclic number.

It is not a de Polignac number, because 18086137 - 2⁷ = 18086009 is a prime.

It is not a weakly prime, because it can be changed into another prime (18086837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9043068 + 9043069.

It is an arithmetic number, because the mean of its divisors is an integer number (9043069).

Almost surely, 2^18086137 is an apocalyptic number.

It is an amenable number.

18086137 is a deficient number, since it is larger than the sum of its proper divisors (1).

18086137 is an equidigital number, since it uses as much as digits as its factorization.

18086137 is an odious number, because the sum of its binary digits is odd.

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

The square root of 18086137 is about 4252.7799143619. The cubic root of 18086137 is about 262.4915165815.

The spelling of 18086137 in words is "eighteen million, eighty-six thousand, one hundred thirty-seven".