18064793 has 2 divisors, whose sum is σ = 18064794. Its totient is φ = 18064792.

The previous prime is 18064777. The next prime is 18064807. The reversal of 18064793 is 39746081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16418704 + 1646089 = 4052^2 + 1283^2 .

It is a cyclic number.

It is not a de Polignac number, because 18064793 - 2⁴ = 18064777 is a prime.

It is a super-2 number, since 2×18064793² = 652673492265698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18064733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9032396 + 9032397.

It is an arithmetic number, because the mean of its divisors is an integer number (9032397).

Almost surely, 2^18064793 is an apocalyptic number.

It is an amenable number.

18064793 is a deficient number, since it is larger than the sum of its proper divisors (1).

18064793 is an equidigital number, since it uses as much as digits as its factorization.

18064793 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 18064793 is about 4250.2697561449. The cubic root of 18064793 is about 262.3882178631.

The spelling of 18064793 in words is "eighteen million, sixty-four thousand, seven hundred ninety-three".