1985883 has 4 divisors (see below), whose sum is σ = 2647848. Its totient is φ = 1323920.

The previous prime is 1985873. The next prime is 1985887. The reversal of 1985883 is 3885891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3885891 = 3 ⋅1295297.

It is a cyclic number.

It is not a de Polignac number, because 1985883 - 2¹⁰ = 1984859 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (1985887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330978 + ... + 330983.

It is an arithmetic number, because the mean of its divisors is an integer number (661962).

2^1985883 is an apocalyptic number.

1985883 is a deficient number, since it is larger than the sum of its proper divisors (661965).

1985883 is an equidigital number, since it uses as much as digits as its factorization.

1985883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661964.

The product of its digits is 69120, while the sum is 42.

The square root of 1985883 is about 1409.2136104935. The cubic root of 1985883 is about 125.6949663469.

The spelling of 1985883 in words is "one million, nine hundred eighty-five thousand, eight hundred eighty-three".