2287918 has 4 divisors (see below), whose sum is σ = 3431880. Its totient is φ = 1143958.

The previous prime is 2287891. The next prime is 2287921. The reversal of 2287918 is 8197822.

2287918 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8197822 = 2 ⋅4098911.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 571978 + ... + 571981.

It is an arithmetic number, because the mean of its divisors is an integer number (857970).

2^2287918 is an apocalyptic number.

2287918 is a deficient number, since it is larger than the sum of its proper divisors (1143962).

2287918 is a wasteful number, since it uses less digits than its factorization.

2287918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1143961.

The product of its digits is 16128, while the sum is 37.

The square root of 2287918 is about 1512.5865264506. The cubic root of 2287918 is about 131.7690712886.

The spelling of 2287918 in words is "two million, two hundred eighty-seven thousand, nine hundred eighteen".