3665431265 has 16 divisors (see below), whose sum is σ = 4631779200. Its totient is φ = 2776954752.

The previous prime is 3665431261. The next prime is 3665431267. The reversal of 3665431265 is 5621345663.

3665431265 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 3665431265 - 2² = 3665431261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3665431261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320516 + ... + 331754.

It is an arithmetic number, because the mean of its divisors is an integer number (289486200).

Almost surely, 2^3665431265 is an apocalyptic number.

It is an amenable number.

3665431265 is a deficient number, since it is larger than the sum of its proper divisors (966347935).

3665431265 is a wasteful number, since it uses less digits than its factorization.

3665431265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14696.

The product of its digits is 388800, while the sum is 41.

The square root of 3665431265 is about 60542.8052290278. The cubic root of 3665431265 is about 1541.8484669883.

The spelling of 3665431265 in words is "three billion, six hundred sixty-five million, four hundred thirty-one thousand, two hundred sixty-five".