618466705028593 has 2 divisors, whose sum is σ = 618466705028594. Its totient is φ = 618466705028592.

The previous prime is 618466705028537. The next prime is 618466705028603. The reversal of 618466705028593 is 395820507664816.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 377047578150369 + 241419126878224 = 19417713^2 + 15537668^2 .

It is a cyclic number.

It is not a de Polignac number, because 618466705028593 - 2³⁷ = 618329266075121 is a prime.

It is not a weakly prime, because it can be changed into another prime (618466705028693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 309233352514296 + 309233352514297.

It is an arithmetic number, because the mean of its divisors is an integer number (309233352514297).

It is a 2-persistent number, because it is pandigital, and so is 2⋅618466705028593 = 1236933410057186, but 3⋅618466705028593 = 1855400115085779 is not.

Almost surely, 2^{618466705028593} is an apocalyptic number.

It is an amenable number.

618466705028593 is a deficient number, since it is larger than the sum of its proper divisors (1).

618466705028593 is an equidigital number, since it uses as much as digits as its factorization.

618466705028593 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 522547200, while the sum is 70.

The spelling of 618466705028593 in words is "six hundred eighteen trillion, four hundred sixty-six billion, seven hundred five million, twenty-eight thousand, five hundred ninety-three".