1986228784236 has 48 divisors (see below), whose sum is σ = 4907535704064. Its totient is φ = 623082061056.

The previous prime is 1986228784207. The next prime is 1986228784249. The reversal of 1986228784236 is 6324878226891.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2292181 + ... + 3037523.

It is an arithmetic number, because the mean of its divisors is an integer number (102240327168).

Almost surely, 2^{1986228784236} is an apocalyptic number.

It is an amenable number.

1986228784236 is an abundant number, since it is smaller than the sum of its proper divisors (2921306919828).

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

1986228784236 is a wasteful number, since it uses less digits than its factorization.

1986228784236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758430 (or 758428 counting only the distinct ones).

The product of its digits is 111476736, while the sum is 66.

The spelling of 1986228784236 in words is "one trillion, nine hundred eighty-six billion, two hundred twenty-eight million, seven hundred eighty-four thousand, two hundred thirty-six".