618248308120213 has 2 divisors, whose sum is σ = 618248308120214. Its totient is φ = 618248308120212.

The previous prime is 618248308120159. The next prime is 618248308120301. The reversal of 618248308120213 is 312021803842816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 584667418930609 + 33580889189604 = 24179897^2 + 5794902^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-618248308120213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (618248308180213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309124154060106 + 309124154060107.

It is an arithmetic number, because the mean of its divisors is an integer number (309124154060107).

Almost surely, 2^{618248308120213} is an apocalyptic number.

It is an amenable number.

618248308120213 is a deficient number, since it is larger than the sum of its proper divisors (1).

618248308120213 is an equidigital number, since it uses as much as digits as its factorization.

618248308120213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 884736, while the sum is 49.

The spelling of 618248308120213 in words is "six hundred eighteen trillion, two hundred forty-eight billion, three hundred eight million, one hundred twenty thousand, two hundred thirteen".