1982317 has 4 divisors (see below), whose sum is σ = 2014876. Its totient is φ = 1949760.

The previous prime is 1982293. The next prime is 1982371. The reversal of 1982317 is 7132891.

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

It can be written as a sum of positive squares in 2 ways, for example, as 741321 + 1240996 = 861^2 + 1114^2 .

It is a cyclic number.

It is not a de Polignac number, because 1982317 - 2¹¹ = 1980269 is a prime.

It is a Duffinian number.

1982317 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16188 + ... + 16309.

It is an arithmetic number, because the mean of its divisors is an integer number (503719).

2^1982317 is an apocalyptic number.

It is an amenable number.

1982317 is a deficient number, since it is larger than the sum of its proper divisors (32559).

1982317 is an equidigital number, since it uses as much as digits as its factorization.

1982317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32558.

The product of its digits is 3024, while the sum is 31.

The square root of 1982317 is about 1407.9477973277. The cubic root of 1982317 is about 125.6196855090.

The spelling of 1982317 in words is "one million, nine hundred eighty-two thousand, three hundred seventeen".