1809229991711 has 2 divisors, whose sum is σ = 1809229991712. Its totient is φ = 1809229991710.

The previous prime is 1809229991651. The next prime is 1809229991729. The reversal of 1809229991711 is 1171999229081.

It is a strong prime.

It is an emirp because it is prime and its reverse (1171999229081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1809229991711 - 2¹⁴ = 1809229975327 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1809229991911) 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, 904614995855 + 904614995856.

It is an arithmetic number, because the mean of its divisors is an integer number (904614995856).

Almost surely, 2^{1809229991711} is an apocalyptic number.

1809229991711 is a deficient number, since it is larger than the sum of its proper divisors (1).

1809229991711 is an equidigital number, since it uses as much as digits as its factorization.

1809229991711 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 59.

The spelling of 1809229991711 in words is "one trillion, eight hundred nine billion, two hundred twenty-nine million, nine hundred ninety-one thousand, seven hundred eleven".