1818382222169 has 2 divisors, whose sum is σ = 1818382222170. Its totient is φ = 1818382222168.

The previous prime is 1818382222141. The next prime is 1818382222183. The reversal of 1818382222169 is 9612222838181.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1089257505625 + 729124716544 = 1043675^2 + 853888^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1818382222169 is a prime.

It is a super-2 number, since 2×1818382222169² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1818382222169.

It is not a weakly prime, because it can be changed into another prime (1818372222169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909191111084 + 909191111085.

It is an arithmetic number, because the mean of its divisors is an integer number (909191111085).

Almost surely, 2^{1818382222169} is an apocalyptic number.

It is an amenable number.

1818382222169 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818382222169 is an equidigital number, since it uses as much as digits as its factorization.

1818382222169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1327104, while the sum is 53.

The spelling of 1818382222169 in words is "one trillion, eight hundred eighteen billion, three hundred eighty-two million, two hundred twenty-two thousand, one hundred sixty-nine".