2309640518 has 4 divisors (see below), whose sum is σ = 3464460780. Its totient is φ = 1154820258.

The previous prime is 2309640517. The next prime is 2309640521. The reversal of 2309640518 is 8150469032.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2309640517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577410128 + ... + 577410131.

It is an arithmetic number, because the mean of its divisors is an integer number (866115195).

Almost surely, 2^2309640518 is an apocalyptic number.

2309640518 is a deficient number, since it is larger than the sum of its proper divisors (1154820262).

2309640518 is a wasteful number, since it uses less digits than its factorization.

2309640518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1154820261.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 2309640518 is about 48058.7194794035. The cubic root of 2309640518 is about 1321.8478325546.

The spelling of 2309640518 in words is "two billion, three hundred nine million, six hundred forty thousand, five hundred eighteen".