263741969 has 2 divisors, whose sum is σ = 263741970. Its totient is φ = 263741968.

The previous prime is 263741963. The next prime is 263742019. The reversal of 263741969 is 969147362.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211324369 + 52417600 = 14537^2 + 7240^2 .

It is a cyclic number.

It is not a de Polignac number, because 263741969 - 2⁴ = 263741953 is a prime.

It is a super-2 number, since 2×263741969² = 139119652423993922, which contains 22 as substring.

It is a nialpdrome in base 16.

It is not a weakly prime, because it can be changed into another prime (263741963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131870984 + 131870985.

It is an arithmetic number, because the mean of its divisors is an integer number (131870985).

Almost surely, 2^263741969 is an apocalyptic number.

It is an amenable number.

263741969 is a deficient number, since it is larger than the sum of its proper divisors (1).

263741969 is an equidigital number, since it uses as much as digits as its factorization.

263741969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 47.

The square root of 263741969 is about 16240.1345129897. The cubic root of 263741969 is about 641.2977970394.

The spelling of 263741969 in words is "two hundred sixty-three million, seven hundred forty-one thousand, nine hundred sixty-nine".