2321618 has 8 divisors (see below), whose sum is σ = 3750348. Its totient is φ = 1071504.

The previous prime is 2321603. The next prime is 2321623. The reversal of 2321618 is 8161232.

2321618 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 1868689 + 452929 = 1367^2 + 673^2 .

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

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2321593 and 2321602.

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, 44621 + ... + 44672.

2^2321618 is an apocalyptic number.

2321618 is a deficient number, since it is larger than the sum of its proper divisors (1428730).

2321618 is a wasteful number, since it uses less digits than its factorization.

2321618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89308.

The product of its digits is 576, while the sum is 23.

The square root of 2321618 is about 1523.6856631208. The cubic root of 2321618 is about 132.4128868476.

The spelling of 2321618 in words is "two million, three hundred twenty-one thousand, six hundred eighteen".