1816676766193 has 2 divisors, whose sum is σ = 1816676766194. Its totient is φ = 1816676766192.

The previous prime is 1816676766169. The next prime is 1816676766239. The reversal of 1816676766193 is 3916676766181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1608678745569 + 207998020624 = 1268337^2 + 456068^2 .

It is a cyclic number.

It is not a de Polignac number, because 1816676766193 - 2²¹ = 1816674669041 is a prime.

It is not a weakly prime, because it can be changed into another prime (1816676766143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 908338383096 + 908338383097.

It is an arithmetic number, because the mean of its divisors is an integer number (908338383097).

Almost surely, 2^{1816676766193} is an apocalyptic number.

It is an amenable number.

1816676766193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1816676766193 is an equidigital number, since it uses as much as digits as its factorization.

1816676766193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82301184, while the sum is 67.

The spelling of 1816676766193 in words is "one trillion, eight hundred sixteen billion, six hundred seventy-six million, seven hundred sixty-six thousand, one hundred ninety-three".