1868683366687 has 2 divisors, whose sum is σ = 1868683366688. Its totient is φ = 1868683366686.

The previous prime is 1868683366661. The next prime is 1868683366751. The reversal of 1868683366687 is 7866633868681.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1868683366687 is a prime.

It is a super-3 number, since 3×1868683366687³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1868683366787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 934341683343 + 934341683344.

It is an arithmetic number, because the mean of its divisors is an integer number (934341683344).

Almost surely, 2^{1868683366687} is an apocalyptic number.

1868683366687 is a deficient number, since it is larger than the sum of its proper divisors (1).

1868683366687 is an equidigital number, since it uses as much as digits as its factorization.

1868683366687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2006581248, while the sum is 76.

The spelling of 1868683366687 in words is "one trillion, eight hundred sixty-eight billion, six hundred eighty-three million, three hundred sixty-six thousand, six hundred eighty-seven".