1878733386816 has 448 divisors, whose sum is σ = 6057785395200. Its totient is φ = 506243727360.

The previous prime is 1878733386749. The next prime is 1878733386919. The reversal of 1878733386816 is 6186833378781.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 86173485 + ... + 86195283.

It is an arithmetic number, because the mean of its divisors is an integer number (13521842400).

Almost surely, 2^{1878733386816} is an apocalyptic number.

1878733386816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1878733386816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3028892697600).

1878733386816 is an abundant number, since it is smaller than the sum of its proper divisors (4179052008384).

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

1878733386816 is a wasteful number, since it uses less digits than its factorization.

1878733386816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21954 (or 21944 counting only the distinct ones).

The product of its digits is 195084288, while the sum is 69.

The spelling of 1878733386816 in words is "one trillion, eight hundred seventy-eight billion, seven hundred thirty-three million, three hundred eighty-six thousand, eight hundred sixteen".