2815640265 has 16 divisors (see below), whose sum is σ = 4547130048. Its totient is φ = 1487639616.

The previous prime is 2815640251. The next prime is 2815640309. The reversal of 2815640265 is 5620465182.

2815640265 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2815640265 - 2¹⁹ = 2815115977 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 875542 + ... + 878751.

It is an arithmetic number, because the mean of its divisors is an integer number (284195628).

Almost surely, 2^2815640265 is an apocalyptic number.

It is an amenable number.

2815640265 is a deficient number, since it is larger than the sum of its proper divisors (1731489783).

2815640265 is a wasteful number, since it uses less digits than its factorization.

2815640265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1754408.

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 2815640265 is about 53062.6070316942. The cubic root of 2815640265 is about 1412.0791994741.

The spelling of 2815640265 in words is "two billion, eight hundred fifteen million, six hundred forty thousand, two hundred sixty-five".