2087918 has 16 divisors (see below), whose sum is σ = 3598560. Its totient is φ = 890016.

The previous prime is 2087909. The next prime is 2087927. The reversal of 2087918 is 8197802.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2087909) and next prime (2087927).

It is an Ulam number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3848 + ... + 4356.

It is an arithmetic number, because the mean of its divisors is an integer number (224910).

2^2087918 is an apocalyptic number.

2087918 is a deficient number, since it is larger than the sum of its proper divisors (1510642).

2087918 is a wasteful number, since it uses less digits than its factorization.

2087918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811.

The product of its (nonzero) digits is 8064, while the sum is 35.

The square root of 2087918 is about 1444.9629753042. The cubic root of 2087918 is about 127.8118573805.

The spelling of 2087918 in words is "two million, eighty-seven thousand, nine hundred eighteen".