1985622 has 16 divisors (see below), whose sum is σ = 3993600. Its totient is φ = 658152.

The previous prime is 1985593. The next prime is 1985623. The reversal of 1985622 is 2265891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1985623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363 + ... + 2025.

It is an arithmetic number, because the mean of its divisors is an integer number (249600).

2^1985622 is an apocalyptic number.

1985622 is an abundant number, since it is smaller than the sum of its proper divisors (2007978).

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

1985622 is a wasteful number, since it uses less digits than its factorization.

1985622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867.

The product of its digits is 8640, while the sum is 33.

The square root of 1985622 is about 1409.1210026112. The cubic root of 1985622 is about 125.6894595063.

The spelling of 1985622 in words is "one million, nine hundred eighty-five thousand, six hundred twenty-two".