1887797980860 has 192 divisors, whose sum is σ = 5954682359808. Its totient is φ = 442713600000.

The previous prime is 1887797980853. The next prime is 1887797980883. The reversal of 1887797980860 is 680897977881.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 57291990 + ... + 57324930.

It is an arithmetic number, because the mean of its divisors is an integer number (31013970624).

Almost surely, 2^{1887797980860} is an apocalyptic number.

1887797980860 is a gapful number since it is divisible by the number (10) 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 1887797980860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2977341179904).

1887797980860 is an abundant number, since it is smaller than the sum of its proper divisors (4066884378948).

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

1887797980860 is a wasteful number, since it uses less digits than its factorization.

1887797980860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35796 (or 35794 counting only the distinct ones).

The product of its (nonzero) digits is 682795008, while the sum is 78.

The spelling of 1887797980860 in words is "one trillion, eight hundred eighty-seven billion, seven hundred ninety-seven million, nine hundred eighty thousand, eight hundred sixty".