1868500366685 has 8 divisors (see below), whose sum is σ = 2242219311576. Its totient is φ = 1494787712320.

The previous prime is 1868500366673. The next prime is 1868500366699. The reversal of 1868500366685 is 5866630058681.

It can be written as a sum of positive squares in 4 ways, for example, as 68990800921 + 1799509565764 = 262661^2 + 1341458^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1868500366685 - 2¹⁰ = 1868500365661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 892406 + ... + 2129175.

It is an arithmetic number, because the mean of its divisors is an integer number (280277413947).

Almost surely, 2^{1868500366685} is an apocalyptic number.

It is an amenable number.

1868500366685 is a deficient number, since it is larger than the sum of its proper divisors (373718944891).

1868500366685 is a wasteful number, since it uses less digits than its factorization.

1868500366685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3145263.

The product of its (nonzero) digits is 49766400, while the sum is 62.

The spelling of 1868500366685 in words is "one trillion, eight hundred sixty-eight billion, five hundred million, three hundred sixty-six thousand, six hundred eighty-five".