1986327912 has 48 divisors (see below), whose sum is σ = 5075300160. Its totient is φ = 647533536.

The previous prime is 1986327901. The next prime is 1986327947. The reversal of 1986327912 is 2197236891.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1496193 + ... + 1497519.

It is an arithmetic number, because the mean of its divisors is an integer number (105735420).

Almost surely, 2^1986327912 is an apocalyptic number.

1986327912 is a gapful number since it is divisible by the number (12) 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 1986327912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2537650080).

1986327912 is an abundant number, since it is smaller than the sum of its proper divisors (3088972248).

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

1986327912 is an equidigital number, since it uses as much as digits as its factorization.

1986327912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710 (or 1379 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 1986327912 is about 44568.2388254236. The cubic root of 1986327912 is about 1257.0435243583.

The spelling of 1986327912 in words is "one billion, nine hundred eighty-six million, three hundred twenty-seven thousand, nine hundred twelve".