1982623 has 4 divisors (see below), whose sum is σ = 2068848. Its totient is φ = 1896400.

The previous prime is 1982611. The next prime is 1982627. The reversal of 1982623 is 3262891.

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 1982623 - 2⁹ = 1982111 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 (1982627) 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, 43078 + ... + 43123.

It is an arithmetic number, because the mean of its divisors is an integer number (517212).

2^1982623 is an apocalyptic number.

1982623 is a deficient number, since it is larger than the sum of its proper divisors (86225).

1982623 is an equidigital number, since it uses as much as digits as its factorization.

1982623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86224.

The product of its digits is 5184, while the sum is 31.

The square root of 1982623 is about 1408.0564619361. The cubic root of 1982623 is about 125.6261489297.

The spelling of 1982623 in words is "one million, nine hundred eighty-two thousand, six hundred twenty-three".