2318749 has 4 divisors (see below), whose sum is σ = 2455164. Its totient is φ = 2182336.

The previous prime is 2318747. The next prime is 2318761. The reversal of 2318749 is 9478132.

2318749 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.

It can be written as a sum of positive squares in 2 ways, for example, as 980100 + 1338649 = 990^2 + 1157^2 .

It is a cyclic number.

It is not a de Polignac number, because 2318749 - 2¹ = 2318747 is a prime.

It is a Duffinian number.

2318749 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2318747) by changing a digit.

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, 68182 + ... + 68215.

It is an arithmetic number, because the mean of its divisors is an integer number (613791).

2^2318749 is an apocalyptic number.

It is an amenable number.

2318749 is a deficient number, since it is larger than the sum of its proper divisors (136415).

2318749 is a wasteful number, since it uses less digits than its factorization.

2318749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136414.

The product of its digits is 12096, while the sum is 34.

The square root of 2318749 is about 1522.7439049295. The cubic root of 2318749 is about 132.3583201377.

The spelling of 2318749 in words is "two million, three hundred eighteen thousand, seven hundred forty-nine".