1818318303229 has 2 divisors, whose sum is σ = 1818318303230. Its totient is φ = 1818318303228.

The previous prime is 1818318303173. The next prime is 1818318303239. The reversal of 1818318303229 is 9223038138181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1266266331225 + 552051972004 = 1125285^2 + 743002^2 .

It is a cyclic number.

It is not a de Polignac number, because 1818318303229 - 2¹⁷ = 1818318172157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1818318303239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909159151614 + 909159151615.

It is an arithmetic number, because the mean of its divisors is an integer number (909159151615).

Almost surely, 2^{1818318303229} is an apocalyptic number.

It is an amenable number.

1818318303229 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818318303229 is an equidigital number, since it uses as much as digits as its factorization.

1818318303229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 497664, while the sum is 49.

The spelling of 1818318303229 in words is "one trillion, eight hundred eighteen billion, three hundred eighteen million, three hundred three thousand, two hundred twenty-nine".