1985886448 has 40 divisors (see below), whose sum is σ = 4735578848. Its totient is φ = 785624832.

The previous prime is 1985886407. The next prime is 1985886451. The reversal of 1985886448 is 8446885891.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 680511 + ... + 683422.

Almost surely, 2^1985886448 is an apocalyptic number.

It is an amenable number.

1985886448 is an abundant number, since it is smaller than the sum of its proper divisors (2749692400).

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

1985886448 is a wasteful number, since it uses less digits than its factorization.

1985886448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363961 (or 1363955 counting only the distinct ones).

The product of its digits is 17694720, while the sum is 61.

The square root of 1985886448 is about 44563.2858752583. The cubic root of 1985886448 is about 1256.9503909308.

The spelling of 1985886448 in words is "one billion, nine hundred eighty-five million, eight hundred eighty-six thousand, four hundred forty-eight".