18064331 has 2 divisors, whose sum is σ = 18064332. Its totient is φ = 18064330.

The previous prime is 18064297. The next prime is 18064349. The reversal of 18064331 is 13346081.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18064331 is a prime.

It is a super-2 number, since 2×18064331² = 652640108955122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18064331.

It is not a weakly prime, because it can be changed into another prime (18064031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9032165 + 9032166.

It is an arithmetic number, because the mean of its divisors is an integer number (9032166).

Almost surely, 2^18064331 is an apocalyptic number.

18064331 is a deficient number, since it is larger than the sum of its proper divisors (1).

18064331 is an equidigital number, since it uses as much as digits as its factorization.

18064331 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 18064331 is about 4250.2154063059. The cubic root of 18064331 is about 262.3859810188.

The spelling of 18064331 in words is "eighteen million, sixty-four thousand, three hundred thirty-one".