618353161 has 2 divisors, whose sum is σ = 618353162. Its totient is φ = 618353160.

The previous prime is 618353159. The next prime is 618353171. The reversal of 618353161 is 161353816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 425143161 + 193210000 = 20619^2 + 13900^2 .

It is a cyclic number.

It is not a de Polignac number, because 618353161 - 2¹ = 618353159 is a prime.

Together with 618353159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (618353101) 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, 309176580 + 309176581.

It is an arithmetic number, because the mean of its divisors is an integer number (309176581).

Almost surely, 2^618353161 is an apocalyptic number.

It is an amenable number.

618353161 is a deficient number, since it is larger than the sum of its proper divisors (1).

618353161 is an equidigital number, since it uses as much as digits as its factorization.

618353161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 34.

The square root of 618353161 is about 24866.7078842375. The cubic root of 618353161 is about 851.9462489142.

The spelling of 618353161 in words is "six hundred eighteen million, three hundred fifty-three thousand, one hundred sixty-one".