1985648 has 20 divisors (see below), whose sum is σ = 4397040. Its totient is φ = 850944.

The previous prime is 1985639. The next prime is 1985663. The reversal of 1985648 is 8465891.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8753 + ... + 8976.

It is an arithmetic number, because the mean of its divisors is an integer number (219852).

2^1985648 is an apocalyptic number.

It is an amenable number.

1985648 is an abundant number, since it is smaller than the sum of its proper divisors (2411392).

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

1985648 is a wasteful number, since it uses less digits than its factorization.

1985648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17744 (or 17738 counting only the distinct ones).

The product of its digits is 69120, while the sum is 41.

The square root of 1985648 is about 1409.1302281904. The cubic root of 1985648 is about 125.6900081021.

The spelling of 1985648 in words is "one million, nine hundred eighty-five thousand, six hundred forty-eight".