1398118418513 has 2 divisors, whose sum is σ = 1398118418514. Its totient is φ = 1398118418512.

The previous prime is 1398118418507. The next prime is 1398118418531. The reversal of 1398118418513 is 3158148118931.

Together with next prime (1398118418531) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1302410477824 + 95707940689 = 1141232^2 + 309367^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1398118418513 is a prime.

It is a super-2 number, since 2×1398118418513² (a number of 25 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1398118418533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 699059209256 + 699059209257.

It is an arithmetic number, because the mean of its divisors is an integer number (699059209257).

Almost surely, 2^{1398118418513} is an apocalyptic number.

It is an amenable number.

1398118418513 is a deficient number, since it is larger than the sum of its proper divisors (1).

1398118418513 is an equidigital number, since it uses as much as digits as its factorization.

1398118418513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 829440, while the sum is 53.

It can be divided in two parts, 1398118418 and 513, that added together give a palindrome (1398118931).

The spelling of 1398118418513 in words is "one trillion, three hundred ninety-eight billion, one hundred eighteen million, four hundred eighteen thousand, five hundred thirteen".