1868851718888 has 96 divisors (see below), whose sum is σ = 4457561606400. Its totient is φ = 718907080320.

The previous prime is 1868851718887. The next prime is 1868851718897. The reversal of 1868851718888 is 8888171588681.

It is a Harshad number since it is a multiple of its sum of digits (77).

It is not an unprimeable number, because it can be changed into a prime (1868851718887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1210295 + ... + 2280902.

It is an arithmetic number, because the mean of its divisors is an integer number (46432933400).

Almost surely, 2^{1868851718888} is an apocalyptic number.

It is an amenable number.

1868851718888 is an abundant number, since it is smaller than the sum of its proper divisors (2588709887512).

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

1868851718888 is a wasteful number, since it uses less digits than its factorization.

1868851718888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491311 (or 3491296 counting only the distinct ones).

The product of its digits is 440401920, while the sum is 77.

The spelling of 1868851718888 in words is "one trillion, eight hundred sixty-eight billion, eight hundred fifty-one million, seven hundred eighteen thousand, eight hundred eighty-eight".