263110889 has 2 divisors, whose sum is σ = 263110890. Its totient is φ = 263110888.

The previous prime is 263110867. The next prime is 263110901. The reversal of 263110889 is 988011362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 218448400 + 44662489 = 14780^2 + 6683^2 .

It is a cyclic number.

It is not a de Polignac number, because 263110889 - 2⁸ = 263110633 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (263110189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131555444 + 131555445.

It is an arithmetic number, because the mean of its divisors is an integer number (131555445).

Almost surely, 2^263110889 is an apocalyptic number.

It is an amenable number.

263110889 is a deficient number, since it is larger than the sum of its proper divisors (1).

263110889 is an equidigital number, since it uses as much as digits as its factorization.

263110889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 263110889 is about 16220.6932342610. The cubic root of 263110889 is about 640.7858908494.

The spelling of 263110889 in words is "two hundred sixty-three million, one hundred ten thousand, eight hundred eighty-nine".