418798555493 has 2 divisors, whose sum is σ = 418798555494. Its totient is φ = 418798555492.

The previous prime is 418798555453. The next prime is 418798555561. The reversal of 418798555493 is 394555897814.

It is an a-pointer prime, because the next prime (418798555561) can be obtained adding 418798555493 to its sum of digits (68).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 330138728929 + 88659826564 = 574577^2 + 297758^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-418798555493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (418798555453) 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, 209399277746 + 209399277747.

It is an arithmetic number, because the mean of its divisors is an integer number (209399277747).

Almost surely, 2^418798555493 is an apocalyptic number.

It is an amenable number.

418798555493 is a deficient number, since it is larger than the sum of its proper divisors (1).

418798555493 is an equidigital number, since it uses as much as digits as its factorization.

418798555493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728000, while the sum is 68.

The spelling of 418798555493 in words is "four hundred eighteen billion, seven hundred ninety-eight million, five hundred fifty-five thousand, four hundred ninety-three".