13818577 has 2 divisors, whose sum is σ = 13818578. Its totient is φ = 13818576.

The previous prime is 13818559. The next prime is 13818589. The reversal of 13818577 is 77581831.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10863616 + 2954961 = 3296^2 + 1719^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13818577 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13813577) 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, 6909288 + 6909289.

It is an arithmetic number, because the mean of its divisors is an integer number (6909289).

Almost surely, 2^13818577 is an apocalyptic number.

It is an amenable number.

13818577 is a deficient number, since it is larger than the sum of its proper divisors (1).

13818577 is an equidigital number, since it uses as much as digits as its factorization.

13818577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47040, while the sum is 40.

The square root of 13818577 is about 3717.3346634383. The cubic root of 13818577 is about 239.9686127935.

The spelling of 13818577 in words is "thirteen million, eight hundred eighteen thousand, five hundred seventy-seven".