618306413 has 2 divisors, whose sum is σ = 618306414. Its totient is φ = 618306412.

The previous prime is 618306397. The next prime is 618306443. The reversal of 618306413 is 314603816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 384277609 + 234028804 = 19603^2 + 15298^2 .

It is a cyclic number.

It is not a de Polignac number, because 618306413 - 2⁴ = 618306397 is a prime.

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 618306413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618306443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309153206 + 309153207.

It is an arithmetic number, because the mean of its divisors is an integer number (309153207).

Almost surely, 2^618306413 is an apocalyptic number.

It is an amenable number.

618306413 is a deficient number, since it is larger than the sum of its proper divisors (1).

618306413 is an equidigital number, since it uses as much as digits as its factorization.

618306413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 618306413 is about 24865.7678948389. The cubic root of 618306413 is about 851.9247790976.

The spelling of 618306413 in words is "six hundred eighteen million, three hundred six thousand, four hundred thirteen".