3518817143173 has 2 divisors, whose sum is σ = 3518817143174. Its totient is φ = 3518817143172.

The previous prime is 3518817143137. The next prime is 3518817143197. The reversal of 3518817143173 is 3713417188153.

Together with previous prime (3518817143137) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1807029570564 + 1711787572609 = 1344258^2 + 1308353^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3518817143173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3518817143173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3518817143873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1759408571586 + 1759408571587.

It is an arithmetic number, because the mean of its divisors is an integer number (1759408571587).

Almost surely, 2^{3518817143173} is an apocalyptic number.

It is an amenable number.

3518817143173 is a deficient number, since it is larger than the sum of its proper divisors (1).

3518817143173 is an equidigital number, since it uses as much as digits as its factorization.

3518817143173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 52.

The spelling of 3518817143173 in words is "three trillion, five hundred eighteen billion, eight hundred seventeen million, one hundred forty-three thousand, one hundred seventy-three".