1980812 has 12 divisors (see below), whose sum is σ = 3501456. Its totient is φ = 980400.

The previous prime is 1980809. The next prime is 1980817. The reversal of 1980812 is 2180891.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (1980817) 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 3 ways as a sum of consecutive naturals, for example, 2048 + ... + 2855.

It is an arithmetic number, because the mean of its divisors is an integer number (291788).

2^1980812 is an apocalyptic number.

It is an amenable number.

1980812 is a deficient number, since it is larger than the sum of its proper divisors (1520644).

1980812 is a wasteful number, since it uses less digits than its factorization.

1980812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5008 (or 5006 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1980812 is about 1407.4132300074. The cubic root of 1980812 is about 125.5878867786.

The spelling of 1980812 in words is "one million, nine hundred eighty thousand, eight hundred twelve".