2091982 has 8 divisors (see below), whose sum is σ = 3144456. Its totient is φ = 1043832.

The previous prime is 2091959. The next prime is 2091983. The reversal of 2091982 is 2891902.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 753 + ... + 2179.

It is an arithmetic number, because the mean of its divisors is an integer number (393057).

2^2091982 is an apocalyptic number.

2091982 is a deficient number, since it is larger than the sum of its proper divisors (1052474).

2091982 is a wasteful number, since it uses less digits than its factorization.

2091982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2162.

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

The square root of 2091982 is about 1446.3685560741. The cubic root of 2091982 is about 127.8947295273.

The spelling of 2091982 in words is "two million, ninety-one thousand, nine hundred eighty-two".