2186981852328 has 512 divisors, whose sum is σ = 7833391104000. Its totient is φ = 549839093760.

The previous prime is 2186981852317. The next prime is 2186981852369. The reversal of 2186981852328 is 8232581896812.

2186981852328 is a `hidden beast` number, since 2 + 1 + 8 + 6 + 9 + 81 + 8 + 523 + 28 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 40798728 + ... + 40852296.

It is an arithmetic number, because the mean of its divisors is an integer number (15299592000).

Almost surely, 2^{2186981852328} is an apocalyptic number.

2186981852328 is a gapful number since it is divisible by the number (28) 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 2186981852328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3916695552000).

2186981852328 is an abundant number, since it is smaller than the sum of its proper divisors (5646409251672).

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

2186981852328 is a wasteful number, since it uses less digits than its factorization.

2186981852328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53702 (or 53692 counting only the distinct ones).

The product of its digits is 26542080, while the sum is 63.

The spelling of 2186981852328 in words is "two trillion, one hundred eighty-six billion, nine hundred eighty-one million, eight hundred fifty-two thousand, three hundred twenty-eight".