19982013 has 16 divisors (see below), whose sum is σ = 27368640. Its totient is φ = 12963456.

The previous prime is 19981999. The next prime is 19982029. The reversal of 19982013 is 31028991.

It is not a de Polignac number, because 19982013 - 2⁸ = 19981757 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19982063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17331 + ... + 18447.

It is an arithmetic number, because the mean of its divisors is an integer number (1710540).

Almost surely, 2^19982013 is an apocalyptic number.

It is an amenable number.

19982013 is a deficient number, since it is larger than the sum of its proper divisors (7386627).

19982013 is a wasteful number, since it uses less digits than its factorization.

19982013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 19982013 is about 4470.1244949106. The cubic root of 19982013 is about 271.3603635367.

The spelling of 19982013 in words is "nineteen million, nine hundred eighty-two thousand, thirteen".