618348361 has 16 divisors (see below), whose sum is σ = 665917200. Its totient is φ = 572108800.

The previous prime is 618348343. The next prime is 618348377. The reversal of 618348361 is 163843816.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 160174336 + 458174025 = 12656^2 + 21405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-618348361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (618348461) 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 in 15 ways as a sum of consecutive naturals, for example, 254625 + ... + 257041.

It is an arithmetic number, because the mean of its divisors is an integer number (41619825).

Almost surely, 2^618348361 is an apocalyptic number.

It is an amenable number.

618348361 is a deficient number, since it is larger than the sum of its proper divisors (47568839).

618348361 is a wasteful number, since it uses less digits than its factorization.

618348361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2684.

The product of its digits is 82944, while the sum is 40.

The square root of 618348361 is about 24866.6113694649. The cubic root of 618348361 is about 851.9440444821.

The spelling of 618348361 in words is "six hundred eighteen million, three hundred forty-eight thousand, three hundred sixty-one".