2019982 has 4 divisors (see below), whose sum is σ = 3029976. Its totient is φ = 1009990.

The previous prime is 2019977. The next prime is 2020001. The reversal of 2019982 is 2899102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2899102 = 2 ⋅1449551.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504994 + ... + 504997.

It is an arithmetic number, because the mean of its divisors is an integer number (757494).

2^2019982 is an apocalyptic number.

2019982 is a deficient number, since it is larger than the sum of its proper divisors (1009994).

2019982 is a wasteful number, since it uses less digits than its factorization.

2019982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009993.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 2019982 is about 1421.2607079632. The cubic root of 2019982 is about 126.4103110079.

It can be divided in two parts, 20 and 19982, that added together give a palindrome (20002).

The spelling of 2019982 in words is "two million, nineteen thousand, nine hundred eighty-two".