3261408265 has 32 divisors (see below), whose sum is σ = 4232562336. Its totient is φ = 2403348480.

The previous prime is 3261408247. The next prime is 3261408281. The reversal of 3261408265 is 5628041623.

It can be written as a sum of positive squares in 16 ways, for example, as 320732281 + 2940675984 = 17909^2 + 54228^2 .

It is not a de Polignac number, because 3261408265 - 2⁹ = 3261407753 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2760975 + ... + 2762155.

It is an arithmetic number, because the mean of its divisors is an integer number (132267573).

Almost surely, 2^3261408265 is an apocalyptic number.

It is an amenable number.

3261408265 is a deficient number, since it is larger than the sum of its proper divisors (971154071).

3261408265 is a wasteful number, since it uses less digits than its factorization.

3261408265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1869.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 3261408265 is about 57108.7407057799. The cubic root of 3261408265 is about 1482.9791866178.

Adding to 3261408265 its reverse (5628041623), we get a palindrome (8889449888).

The spelling of 3261408265 in words is "three billion, two hundred sixty-one million, four hundred eight thousand, two hundred sixty-five".