1813982 has 8 divisors (see below), whose sum is σ = 2736552. Its totient is φ = 901800.

The previous prime is 1813969. The next prime is 1813991. The reversal of 1813982 is 2893181.

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, 2144 + ... + 2867.

It is an arithmetic number, because the mean of its divisors is an integer number (342069).

2^1813982 is an apocalyptic number.

1813982 is a deficient number, since it is larger than the sum of its proper divisors (922570).

1813982 is a wasteful number, since it uses less digits than its factorization.

1813982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5194.

The product of its digits is 3456, while the sum is 32.

The square root of 1813982 is about 1346.8414903024. The cubic root of 1813982 is about 121.9581958357.

The spelling of 1813982 in words is "one million, eight hundred thirteen thousand, nine hundred eighty-two".