260909161 has 2 divisors, whose sum is σ = 260909162. Its totient is φ = 260909160.

The previous prime is 260909153. The next prime is 260909177. The reversal of 260909161 is 161909062.

260909161 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., 182250000 + 78659161 = 13500^2 + 8869^2 .

It is a cyclic number.

It is not a de Polignac number, because 260909161 - 2³ = 260909153 is a prime.

It is not a weakly prime, because it can be changed into another prime (260909111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130454580 + 130454581.

It is an arithmetic number, because the mean of its divisors is an integer number (130454581).

Almost surely, 2^260909161 is an apocalyptic number.

It is an amenable number.

260909161 is a deficient number, since it is larger than the sum of its proper divisors (1).

260909161 is an equidigital number, since it uses as much as digits as its factorization.

260909161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 260909161 is about 16152.6827802690. The cubic root of 260909161 is about 638.9935034112.

Subtracting from 260909161 its reverse (161909062), we obtain a palindrome (99000099).

The spelling of 260909161 in words is "two hundred sixty million, nine hundred nine thousand, one hundred sixty-one".