1819982 has 8 divisors (see below), whose sum is σ = 2824200. Its totient is φ = 878584.

The previous prime is 1819957. The next prime is 1819999. The reversal of 1819982 is 2899181.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15632 + ... + 15747.

It is an arithmetic number, because the mean of its divisors is an integer number (353025).

2^1819982 is an apocalyptic number.

1819982 is a deficient number, since it is larger than the sum of its proper divisors (1004218).

1819982 is a wasteful number, since it uses less digits than its factorization.

1819982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31410.

The product of its digits is 10368, while the sum is 38.

The square root of 1819982 is about 1349.0670850629. The cubic root of 1819982 is about 122.0925124692.

It can be divided in two parts, 18199 and 82, that added together give a palindrome (18281).

The spelling of 1819982 in words is "one million, eight hundred nineteen thousand, nine hundred eighty-two".