1878803247864 has 16 divisors (see below), whose sum is σ = 4697008119720. Its totient is φ = 626267749280.

The previous prime is 1878803247863. The next prime is 1878803248001. The reversal of 1878803247864 is 4687423088781.

It is a junction number, because it is equal to n+sod(n) for n = 1878803247795 and 1878803247804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1878803247863) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 39141734307 + ... + 39141734354.

Almost surely, 2^{1878803247864} is an apocalyptic number.

It is an amenable number.

1878803247864 is an abundant number, since it is smaller than the sum of its proper divisors (2818204871856).

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

1878803247864 is a wasteful number, since it uses less digits than its factorization.

1878803247864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78283468670 (or 78283468666 counting only the distinct ones).

The product of its (nonzero) digits is 115605504, while the sum is 66.

The spelling of 1878803247864 in words is "one trillion, eight hundred seventy-eight billion, eight hundred three million, two hundred forty-seven thousand, eight hundred sixty-four".