618413 has 2 divisors, whose sum is σ = 618414. Its totient is φ = 618412.

The previous prime is 618407. The next prime is 618421. The reversal of 618413 is 314816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 611524 + 6889 = 782^2 + 83^2 .

It is a cyclic number.

It is not a de Polignac number, because 618413 - 2⁶ = 618349 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618463) 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, 309206 + 309207.

It is an arithmetic number, because the mean of its divisors is an integer number (309207).

2⁶¹⁸⁴¹³ is an apocalyptic number.

It is an amenable number.

618413 is a deficient number, since it is larger than the sum of its proper divisors (1).

618413 is an equidigital number, since it uses as much as digits as its factorization.

618413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 23.

The square root of 618413 is about 786.3923956906. The cubic root of 618413 is about 85.1973729417.

The spelling of 618413 in words is "six hundred eighteen thousand, four hundred thirteen".