1868336686837 has 4 divisors (see below), whose sum is σ = 1868362751520. Its totient is φ = 1868310622156.

The previous prime is 1868336686787. The next prime is 1868336687011. The reversal of 1868336686837 is 7386866338681.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1868336686837 - 2¹⁵ = 1868336654069 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1868336686837.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1868336681837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12924523 + ... + 13068280.

It is an arithmetic number, because the mean of its divisors is an integer number (467090687880).

Almost surely, 2^{1868336686837} is an apocalyptic number.

It is an amenable number.

1868336686837 is a deficient number, since it is larger than the sum of its proper divisors (26064683).

1868336686837 is an equidigital number, since it uses as much as digits as its factorization.

1868336686837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26064682.

The product of its digits is 1003290624, while the sum is 73.

The spelling of 1868336686837 in words is "one trillion, eight hundred sixty-eight billion, three hundred thirty-six million, six hundred eighty-six thousand, eight hundred thirty-seven".