1868313443418 has 24 divisors (see below), whose sum is σ = 4048197211188. Its totient is φ = 622742724672.

The previous prime is 1868313443401. The next prime is 1868313443419. The reversal of 1868313443418 is 8143443138681.

1868313443418 is a `hidden beast` number, since 1 + 8 + 68 + 3 + 134 + 434 + 18 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1483458228729 + 384855214689 = 1217973^2 + 620367^2 .

It is not an unprimeable number, because it can be changed into a prime (1868313443419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1961355 + ... + 2753822.

Almost surely, 2^{1868313443418} is an apocalyptic number.

1868313443418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1868313443418 is an abundant number, since it is smaller than the sum of its proper divisors (2179883767770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1868313443418 is a wasteful number, since it uses less digits than its factorization.

1868313443418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4737198 (or 4737195 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 54.

The spelling of 1868313443418 in words is "one trillion, eight hundred sixty-eight billion, three hundred thirteen million, four hundred forty-three thousand, four hundred eighteen".