263375869 has 2 divisors, whose sum is σ = 263375870. Its totient is φ = 263375868.

The previous prime is 263375863. The next prime is 263375873. The reversal of 263375869 is 968573362.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 200364025 + 63011844 = 14155^2 + 7938^2 .

It is a cyclic number.

It is not a de Polignac number, because 263375869 - 2¹³ = 263367677 is a prime.

It is a super-2 number, since 2×263375869² = 138733696743010322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263375863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131687934 + 131687935.

It is an arithmetic number, because the mean of its divisors is an integer number (131687935).

Almost surely, 2^263375869 is an apocalyptic number.

It is an amenable number.

263375869 is a deficient number, since it is larger than the sum of its proper divisors (1).

263375869 is an equidigital number, since it uses as much as digits as its factorization.

263375869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 49.

The square root of 263375869 is about 16228.8591404325. The cubic root of 263375869 is about 641.0009313308. Note that the first 3 decimals are identical.

The spelling of 263375869 in words is "two hundred sixty-three million, three hundred seventy-five thousand, eight hundred sixty-nine".