1982635 has 4 divisors (see below), whose sum is σ = 2379168. Its totient is φ = 1586104.

The previous prime is 1982633. The next prime is 1982639. The reversal of 1982635 is 5362891.

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

It is a cyclic number.

It is not a de Polignac number, because 1982635 - 2¹ = 1982633 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1982635.

It is not an unprimeable number, because it can be changed into a prime (1982633) 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, 198259 + ... + 198268.

It is an arithmetic number, because the mean of its divisors is an integer number (594792).

2^1982635 is an apocalyptic number.

1982635 is a deficient number, since it is larger than the sum of its proper divisors (396533).

1982635 is an equidigital number, since it uses as much as digits as its factorization.

1982635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396532.

The product of its digits is 12960, while the sum is 34.

The square root of 1982635 is about 1408.0607231224. The cubic root of 1982635 is about 125.6264023836.

The spelling of 1982635 in words is "one million, nine hundred eighty-two thousand, six hundred thirty-five".