1980834 has 8 divisors (see below), whose sum is σ = 3961680. Its totient is φ = 660276.

The previous prime is 1980821. The next prime is 1980859. The reversal of 1980834 is 4380891.

It is a sphenic number, since it is the product of 3 distinct primes.

1980834 is an admirable number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1980795 and 1980804.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 165064 + ... + 165075.

It is an arithmetic number, because the mean of its divisors is an integer number (495210).

2^1980834 is an apocalyptic number.

1980834 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1980834 is a wasteful number, since it uses less digits than its factorization.

1980834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330144.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 1980834 is about 1407.4210457429. The cubic root of 1980834 is about 125.5883517265.

The spelling of 1980834 in words is "one million, nine hundred eighty thousand, eight hundred thirty-four".