2309640505 has 8 divisors (see below), whose sum is σ = 2782612224. Its totient is φ = 1840350000.

The previous prime is 2309640497. The next prime is 2309640517. The reversal of 2309640505 is 5050469032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2309640505 - 2³ = 2309640497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 918921 + ... + 921430.

It is an arithmetic number, because the mean of its divisors is an integer number (347826528).

Almost surely, 2^2309640505 is an apocalyptic number.

It is an amenable number.

2309640505 is a deficient number, since it is larger than the sum of its proper divisors (472971719).

2309640505 is a wasteful number, since it uses less digits than its factorization.

2309640505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1840607.

The product of its (nonzero) digits is 32400, while the sum is 34.

The square root of 2309640505 is about 48058.7193441523. The cubic root of 2309640505 is about 1321.8478300746.

The spelling of 2309640505 in words is "two billion, three hundred nine million, six hundred forty thousand, five hundred five".