3613120265 has 4 divisors (see below), whose sum is σ = 4335744324. Its totient is φ = 2890496208.

The previous prime is 3613120261. The next prime is 3613120271. The reversal of 3613120265 is 5620213163.

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 1740308089 + 1872812176 = 41717^2 + 43276^2 .

It is a cyclic number.

It is not a de Polignac number, because 3613120265 - 2² = 3613120261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3613120261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361312022 + ... + 361312031.

It is an arithmetic number, because the mean of its divisors is an integer number (1083936081).

Almost surely, 2^3613120265 is an apocalyptic number.

It is an amenable number.

3613120265 is a deficient number, since it is larger than the sum of its proper divisors (722624059).

3613120265 is an equidigital number, since it uses as much as digits as its factorization.

3613120265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722624058.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 3613120265 is about 60109.2361039466. The cubic root of 3613120265 is about 1534.4784931720.

The spelling of 3613120265 in words is "three billion, six hundred thirteen million, one hundred twenty thousand, two hundred sixty-five".