1798860211913 has 2 divisors, whose sum is σ = 1798860211914. Its totient is φ = 1798860211912.

The previous prime is 1798860211879. The next prime is 1798860211919. The reversal of 1798860211913 is 3191120688971.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1382381008009 + 416479203904 = 1175747^2 + 645352^2 .

It is an emirp because it is prime and its reverse (3191120688971) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1798860211913 - 2³² = 1794565244617 is a prime.

It is not a weakly prime, because it can be changed into another prime (1798860211919) 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, 899430105956 + 899430105957.

It is an arithmetic number, because the mean of its divisors is an integer number (899430105957).

Almost surely, 2^{1798860211913} is an apocalyptic number.

It is an amenable number.

1798860211913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1798860211913 is an equidigital number, since it uses as much as digits as its factorization.

1798860211913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 56.

The spelling of 1798860211913 in words is "one trillion, seven hundred ninety-eight billion, eight hundred sixty million, two hundred eleven thousand, nine hundred thirteen".