2081594 has 4 divisors (see below), whose sum is σ = 3122394. Its totient is φ = 1040796.

The previous prime is 2081581. The next prime is 2081603. The reversal of 2081594 is 4951802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1890625 + 190969 = 1375^2 + 437^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 520397 + ... + 520400.

2^2081594 is an apocalyptic number.

2081594 is a deficient number, since it is larger than the sum of its proper divisors (1040800).

2081594 is a wasteful number, since it uses less digits than its factorization.

2081594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1040799.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 2081594 is about 1442.7730244221. The cubic root of 2081594 is about 127.6826857019.

The spelling of 2081594 in words is "two million, eighty-one thousand, five hundred ninety-four".