18065477 has 2 divisors, whose sum is σ = 18065478. Its totient is φ = 18065476.

The previous prime is 18065473. The next prime is 18065503. The reversal of 18065477 is 77456081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14508481 + 3556996 = 3809^2 + 1886^2 .

It is a cyclic number.

It is not a de Polignac number, because 18065477 - 2² = 18065473 is a prime.

It is a super-2 number, since 2×18065477² = 652722918475058, 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 18065477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18065473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9032738 + 9032739.

It is an arithmetic number, because the mean of its divisors is an integer number (9032739).

Almost surely, 2^18065477 is an apocalyptic number.

It is an amenable number.

18065477 is a deficient number, since it is larger than the sum of its proper divisors (1).

18065477 is an equidigital number, since it uses as much as digits as its factorization.

18065477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 38.

The square root of 18065477 is about 4250.3502208642. The cubic root of 18065477 is about 262.3915294847.

The spelling of 18065477 in words is "eighteen million, sixty-five thousand, four hundred seventy-seven".