2650910261 has 2 divisors, whose sum is σ = 2650910262. Its totient is φ = 2650910260.

The previous prime is 2650910219. The next prime is 2650910323. The reversal of 2650910261 is 1620190562.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1453058161 + 1197852100 = 38119^2 + 34610^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2650910261 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2650910461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1325455130 + 1325455131.

It is an arithmetic number, because the mean of its divisors is an integer number (1325455131).

Almost surely, 2^2650910261 is an apocalyptic number.

It is an amenable number.

2650910261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2650910261 is an equidigital number, since it uses as much as digits as its factorization.

2650910261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 2650910261 is about 51486.9911822394. The cubic root of 2650910261 is about 1383.9859313184.

The spelling of 2650910261 in words is "two billion, six hundred fifty million, nine hundred ten thousand, two hundred sixty-one".