1908985 has 16 divisors (see below), whose sum is σ = 2528064. Its totient is φ = 1374912.

The previous prime is 1908979. The next prime is 1908989. The reversal of 1908985 is 5898091.

It is a cyclic number.

It is not a de Polignac number, because 1908985 - 2⁷ = 1908857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1908989) 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 15 ways as a sum of consecutive naturals, for example, 2454 + ... + 3136.

It is an arithmetic number, because the mean of its divisors is an integer number (158004).

It is a Poulet number, since it divides 2^1908984-1.

2^1908985 is an apocalyptic number.

It is an amenable number.

1908985 is a deficient number, since it is larger than the sum of its proper divisors (619079).

1908985 is a wasteful number, since it uses less digits than its factorization.

1908985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744.

The product of its (nonzero) digits is 25920, while the sum is 40.

The square root of 1908985 is about 1381.6602331977. The cubic root of 1908985 is about 124.0511625502.

The spelling of 1908985 in words is "one million, nine hundred eight thousand, nine hundred eighty-five".