18064513 has 2 divisors, whose sum is σ = 18064514. Its totient is φ = 18064512.

The previous prime is 18064511. The next prime is 18064517. The reversal of 18064513 is 31546081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13082689 + 4981824 = 3617^2 + 2232^2 .

It is a cyclic number.

It is not a de Polignac number, because 18064513 - 2¹ = 18064511 is a prime.

Together with 18064511, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (18064511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9032256 + 9032257.

It is an arithmetic number, because the mean of its divisors is an integer number (9032257).

Almost surely, 2^18064513 is an apocalyptic number.

It is an amenable number.

18064513 is a deficient number, since it is larger than the sum of its proper divisors (1).

18064513 is an equidigital number, since it uses as much as digits as its factorization.

18064513 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 18064513 is about 4250.2368169315. The cubic root of 18064513 is about 262.3868622044.

The spelling of 18064513 in words is "eighteen million, sixty-four thousand, five hundred thirteen".