2043655265 has 4 divisors (see below), whose sum is σ = 2452386324. Its totient is φ = 1634924208.

The previous prime is 2043655241. The next prime is 2043655277. The reversal of 2043655265 is 5625563402.

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 1509167104 + 534488161 = 38848^2 + 23119^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043655265 - 2¹⁰ = 2043654241 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 204365522 + ... + 204365531.

It is an arithmetic number, because the mean of its divisors is an integer number (613096581).

Almost surely, 2^2043655265 is an apocalyptic number.

It is an amenable number.

2043655265 is a deficient number, since it is larger than the sum of its proper divisors (408731059).

2043655265 is an equidigital number, since it uses as much as digits as its factorization.

2043655265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408731058.

The product of its (nonzero) digits is 216000, while the sum is 38.

The square root of 2043655265 is about 45206.8055164264. The cubic root of 2043655265 is about 1269.0221801462.

The spelling of 2043655265 in words is "two billion, forty-three million, six hundred fifty-five thousand, two hundred sixty-five".