3645645265 has 8 divisors (see below), whose sum is σ = 4377721320. Its totient is φ = 2914551552.

The previous prime is 3645645259. The next prime is 3645645299. The reversal of 3645645265 is 5625465463.

It can be written as a sum of positive squares in 4 ways, for example, as 101586241 + 3544059024 = 10079^2 + 59532^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3645645265 - 2²⁹ = 3108774353 is a prime.

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, 237394 + ... + 252283.

It is an arithmetic number, because the mean of its divisors is an integer number (547215165).

Almost surely, 2^3645645265 is an apocalyptic number.

It is an amenable number.

3645645265 is a deficient number, since it is larger than the sum of its proper divisors (732076055).

3645645265 is a wasteful number, since it uses less digits than its factorization.

3645645265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491171.

The product of its digits is 2592000, while the sum is 46.

The square root of 3645645265 is about 60379.1790686160. The cubic root of 3645645265 is about 1539.0691604474.

The spelling of 3645645265 in words is "three billion, six hundred forty-five million, six hundred forty-five thousand, two hundred sixty-five".