2659009261 has 2 divisors, whose sum is σ = 2659009262. Its totient is φ = 2659009260.

The previous prime is 2659009247. The next prime is 2659009291. The reversal of 2659009261 is 1629009562.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2082096900 + 576912361 = 45630^2 + 24019^2 .

It is a cyclic number.

It is not a de Polignac number, because 2659009261 - 2⁵ = 2659009229 is a prime.

It is a super-2 number, since 2×2659009261² = 14140660500167532242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2659009201) 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 as a sum of consecutive naturals, namely, 1329504630 + 1329504631.

It is an arithmetic number, because the mean of its divisors is an integer number (1329504631).

Almost surely, 2^2659009261 is an apocalyptic number.

It is an amenable number.

2659009261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2659009261 is an equidigital number, since it uses as much as digits as its factorization.

2659009261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 58320, while the sum is 40.

The square root of 2659009261 is about 51565.5821357618. The cubic root of 2659009261 is about 1385.3939390379.

The spelling of 2659009261 in words is "two billion, six hundred fifty-nine million, nine thousand, two hundred sixty-one".