2338640749 has 4 divisors (see below), whose sum is σ = 2340544860. Its totient is φ = 2336736640.

The previous prime is 2338640747. The next prime is 2338640771. The reversal of 2338640749 is 9470468332.

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 1455956649 + 882684100 = 38157^2 + 29710^2 .

It is a cyclic number.

It is not a de Polignac number, because 2338640749 - 2¹ = 2338640747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2338640699 and 2338640708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2338640743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 950212 + ... + 952669.

It is an arithmetic number, because the mean of its divisors is an integer number (585136215).

Almost surely, 2^2338640749 is an apocalyptic number.

It is an amenable number.

2338640749 is a deficient number, since it is larger than the sum of its proper divisors (1904111).

2338640749 is a wasteful number, since it uses less digits than its factorization.

2338640749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1904110.

The product of its (nonzero) digits is 870912, while the sum is 46.

The square root of 2338640749 is about 48359.4949208529. The cubic root of 2338640749 is about 1327.3572844733.

The spelling of 2338640749 in words is "two billion, three hundred thirty-eight million, six hundred forty thousand, seven hundred forty-nine".