1980794 has 4 divisors (see below), whose sum is σ = 2971194. Its totient is φ = 990396.

The previous prime is 1980791. The next prime is 1980809. The reversal of 1980794 is 4970891.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1575025 + 405769 = 1255^2 + 637^2 .

It is a zygodrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (1980791) 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 as a sum of consecutive naturals, namely, 495197 + ... + 495200.

2^1980794 is an apocalyptic number.

1980794 is a deficient number, since it is larger than the sum of its proper divisors (990400).

1980794 is an equidigital number, since it uses as much as digits as its factorization.

1980794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990399.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 1980794 is about 1407.4068352825. The cubic root of 1980794 is about 125.5875063641.

The spelling of 1980794 in words is "one million, nine hundred eighty thousand, seven hundred ninety-four".