1799187873361 has 2 divisors, whose sum is σ = 1799187873362. Its totient is φ = 1799187873360.

The previous prime is 1799187873359. The next prime is 1799187873377. The reversal of 1799187873361 is 1633787819971.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1163291673600 + 635896199761 = 1078560^2 + 797431^2 .

It is a cyclic number.

It is not a de Polignac number, because 1799187873361 - 2¹ = 1799187873359 is a prime.

Together with 1799187873359, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1799187873341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 899593936680 + 899593936681.

It is an arithmetic number, because the mean of its divisors is an integer number (899593936681).

Almost surely, 2^{1799187873361} is an apocalyptic number.

It is an amenable number.

1799187873361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1799187873361 is an equidigital number, since it uses as much as digits as its factorization.

1799187873361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96018048, while the sum is 70.

The spelling of 1799187873361 in words is "one trillion, seven hundred ninety-nine billion, one hundred eighty-seven million, eight hundred seventy-three thousand, three hundred sixty-one".