1986341204992 has 22 divisors (see below), whose sum is σ = 3970742625698. Its totient is φ = 993170601984.

The previous prime is 1986341204977. The next prime is 1986341205011. The reversal of 1986341204992 is 2994021436891.

It can be written as a sum of positive squares in only one way, i.e., 1986340709376 + 495616 = 1409376^2 + 704^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 969892143 + ... + 969894190.

Almost surely, 2^{1986341204992} is an apocalyptic number.

It is an amenable number.

1986341204992 is a deficient number, since it is larger than the sum of its proper divisors (1984401420706).

1986341204992 is an equidigital number, since it uses as much as digits as its factorization.

1986341204992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1939786353 (or 1939786335 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 58.

The spelling of 1986341204992 in words is "one trillion, nine hundred eighty-six billion, three hundred forty-one million, two hundred four thousand, nine hundred ninety-two".