2318993 has 4 divisors (see below), whose sum is σ = 2324208. Its totient is φ = 2313780.

The previous prime is 2318959. The next prime is 2319013. The reversal of 2318993 is 3998132.

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 not a de Polignac number, because 2318993 - 2⁸ = 2318737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2318923) 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, 1871 + ... + 2852.

It is an arithmetic number, because the mean of its divisors is an integer number (581052).

2^2318993 is an apocalyptic number.

It is an amenable number.

2318993 is a deficient number, since it is larger than the sum of its proper divisors (5215).

2318993 is an equidigital number, since it uses as much as digits as its factorization.

2318993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5214.

The product of its digits is 11664, while the sum is 35.

The square root of 2318993 is about 1522.8240213498. The cubic root of 2318993 is about 132.3629626263.

The spelling of 2318993 in words is "two million, three hundred eighteen thousand, nine hundred ninety-three".