19841982 has 16 divisors (see below), whose sum is σ = 39727632. Its totient is φ = 6606720.

The previous prime is 19841959. The next prime is 19841989. The reversal of 19841982 is 28914891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19841989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9732 + ... + 11592.

It is an arithmetic number, because the mean of its divisors is an integer number (2482977).

Almost surely, 2^19841982 is an apocalyptic number.

19841982 is an abundant number, since it is smaller than the sum of its proper divisors (19885650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19841982 is a wasteful number, since it uses less digits than its factorization.

19841982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3643.

The product of its digits is 41472, while the sum is 42.

The square root of 19841982 is about 4454.4339707756. The cubic root of 19841982 is about 270.7249925534.

The spelling of 19841982 in words is "nineteen million, eight hundred forty-one thousand, nine hundred eighty-two".