2865296261 has 2 divisors, whose sum is σ = 2865296262. Its totient is φ = 2865296260.

The previous prime is 2865296257. The next prime is 2865296293. The reversal of 2865296261 is 1626925682.

It is a happy number.

2865296261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1934680225 + 930616036 = 43985^2 + 30506^2 .

It is a cyclic number.

It is not a de Polignac number, because 2865296261 - 2² = 2865296257 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2865296561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1432648130 + 1432648131.

It is an arithmetic number, because the mean of its divisors is an integer number (1432648131).

Almost surely, 2^2865296261 is an apocalyptic number.

It is an amenable number.

2865296261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2865296261 is an equidigital number, since it uses as much as digits as its factorization.

2865296261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 47.

The square root of 2865296261 is about 53528.4621579959. The cubic root of 2865296261 is about 1420.3319102795.

The spelling of 2865296261 in words is "two billion, eight hundred sixty-five million, two hundred ninety-six thousand, two hundred sixty-one".