2081986 has 8 divisors (see below), whose sum is σ = 3133260. Its totient is φ = 1037568.

The previous prime is 2081969. The next prime is 2082019. The reversal of 2081986 is 6891802.

It can be written as a sum of positive squares in 2 ways, for example, as 2047761 + 34225 = 1431^2 + 185^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 871 + ... + 2218.

2^2081986 is an apocalyptic number.

2081986 is a deficient number, since it is larger than the sum of its proper divisors (1051274).

2081986 is a wasteful number, since it uses less digits than its factorization.

2081986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3428.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 2081986 is about 1442.9088675311. The cubic root of 2081986 is about 127.6907001484.

The spelling of 2081986 in words is "two million, eighty-one thousand, nine hundred eighty-six".