1982653 has 4 divisors (see below), whose sum is σ = 2005020. Its totient is φ = 1960288.

The previous prime is 1982641. The next prime is 1982671. The reversal of 1982653 is 3562891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3562891 = 1283 ⋅2777.

It can be written as a sum of positive squares in 2 ways, for example, as 1026169 + 956484 = 1013^2 + 978^2 .

It is a cyclic number.

It is not a de Polignac number, because 1982653 - 2¹⁷ = 1851581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1982633) 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, 11050 + ... + 11227.

It is an arithmetic number, because the mean of its divisors is an integer number (501255).

2^1982653 is an apocalyptic number.

It is an amenable number.

1982653 is a deficient number, since it is larger than the sum of its proper divisors (22367).

1982653 is an equidigital number, since it uses as much as digits as its factorization.

1982653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22366.

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

The square root of 1982653 is about 1408.0671148777. The cubic root of 1982653 is about 125.6267825626.

The spelling of 1982653 in words is "one million, nine hundred eighty-two thousand, six hundred fifty-three".