1808612388827 has 2 divisors, whose sum is σ = 1808612388828. Its totient is φ = 1808612388826.

The previous prime is 1808612388811. The next prime is 1808612388893. The reversal of 1808612388827 is 7288832168081.

It is a weak prime.

It is an emirp because it is prime and its reverse (7288832168081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1808612388827 - 2⁴ = 1808612388811 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1808612388827.

It is not a weakly prime, because it can be changed into another prime (1808612388227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 904306194413 + 904306194414.

It is an arithmetic number, because the mean of its divisors is an integer number (904306194414).

Almost surely, 2^{1808612388827} is an apocalyptic number.

1808612388827 is a deficient number, since it is larger than the sum of its proper divisors (1).

1808612388827 is an equidigital number, since it uses as much as digits as its factorization.

1808612388827 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16515072, while the sum is 62.

The spelling of 1808612388827 in words is "one trillion, eight hundred eight billion, six hundred twelve million, three hundred eighty-eight thousand, eight hundred twenty-seven".