260905913 has 2 divisors, whose sum is σ = 260905914. Its totient is φ = 260905912.

The previous prime is 260905873. The next prime is 260905943. The reversal of 260905913 is 319509062.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179238544 + 81667369 = 13388^2 + 9037^2 .

It is a cyclic number.

It is not a de Polignac number, because 260905913 - 2⁶ = 260905849 is a prime.

It is not a weakly prime, because it can be changed into another prime (260905943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130452956 + 130452957.

It is an arithmetic number, because the mean of its divisors is an integer number (130452957).

Almost surely, 2^260905913 is an apocalyptic number.

It is an amenable number.

260905913 is a deficient number, since it is larger than the sum of its proper divisors (1).

260905913 is an equidigital number, since it uses as much as digits as its factorization.

260905913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 35.

The square root of 260905913 is about 16152.5822393820. The cubic root of 260905913 is about 638.9908518376.

The spelling of 260905913 in words is "two hundred sixty million, nine hundred five thousand, nine hundred thirteen".