1868683851872 has 24 divisors (see below), whose sum is σ = 3683646060696. Its totient is φ = 933154693632.

The previous prime is 1868683851869. The next prime is 1868683851889. The reversal of 1868683851872 is 2781583868681.

It is a junction number, because it is equal to n+sod(n) for n = 1868683851796 and 1868683851805.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 37075433 + ... + 37125800.

It is an arithmetic number, because the mean of its divisors is an integer number (153485252529).

Almost surely, 2^{1868683851872} is an apocalyptic number.

It is an amenable number.

1868683851872 is a deficient number, since it is larger than the sum of its proper divisors (1814962208824).

1868683851872 is an equidigital number, since it uses as much as digits as its factorization.

1868683851872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74202030 (or 74202022 counting only the distinct ones).

The product of its digits is 247726080, while the sum is 71.

The spelling of 1868683851872 in words is "one trillion, eight hundred sixty-eight billion, six hundred eighty-three million, eight hundred fifty-one thousand, eight hundred seventy-two".