2318861 has 4 divisors (see below), whose sum is σ = 2372832. Its totient is φ = 2264892.

The previous prime is 2318843. The next prime is 2318863. The reversal of 2318861 is 1688132.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2318861 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2318863) 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, 26921 + ... + 27006.

It is an arithmetic number, because the mean of its divisors is an integer number (593208).

2^2318861 is an apocalyptic number.

It is an amenable number.

2318861 is a deficient number, since it is larger than the sum of its proper divisors (53971).

2318861 is an equidigital number, since it uses as much as digits as its factorization.

2318861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53970.

The product of its digits is 2304, while the sum is 29.

The square root of 2318861 is about 1522.7806802032. The cubic root of 2318861 is about 132.3604511565.

The spelling of 2318861 in words is "two million, three hundred eighteen thousand, eight hundred sixty-one".