1985396 has 48 divisors (see below), whose sum is σ = 4346496. Its totient is φ = 774144.

The previous prime is 1985377. The next prime is 1985407. The reversal of 1985396 is 6935891.

It is a congruent number.

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, 20420 + ... + 20516.

It is an arithmetic number, because the mean of its divisors is an integer number (90552).

2^1985396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1985396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2173248).

1985396 is an abundant number, since it is smaller than the sum of its proper divisors (2361100).

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

1985396 is a wasteful number, since it uses less digits than its factorization.

1985396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 166 counting only the distinct ones).

The product of its digits is 58320, while the sum is 41.

The square root of 1985396 is about 1409.0408084935. The cubic root of 1985396 is about 125.6846907411.

The spelling of 1985396 in words is "one million, nine hundred eighty-five thousand, three hundred ninety-six".