1878886205728 has 144 divisors (see below), whose sum is σ = 4492751526144. Its totient is φ = 757540454400.

The previous prime is 1878886205723. The next prime is 1878886205773. The reversal of 1878886205728 is 8275026888781.

It is not an unprimeable number, because it can be changed into a prime (1878886205723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 195692128 + ... + 195701728.

It is an arithmetic number, because the mean of its divisors is an integer number (31199663376).

Almost surely, 2^{1878886205728} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1878886205728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2246375763072).

1878886205728 is an abundant number, since it is smaller than the sum of its proper divisors (2613865320416).

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

1878886205728 is a wasteful number, since it uses less digits than its factorization.

1878886205728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12675 (or 12650 counting only the distinct ones).

The product of its (nonzero) digits is 192675840, while the sum is 70.

The spelling of 1878886205728 in words is "one trillion, eight hundred seventy-eight billion, eight hundred eighty-six million, two hundred five thousand, seven hundred twenty-eight".