263878141 has 2 divisors, whose sum is σ = 263878142. Its totient is φ = 263878140.

The previous prime is 263878129. The next prime is 263878159. The reversal of 263878141 is 141878362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180794916 + 83083225 = 13446^2 + 9115^2 .

It is a cyclic number.

It is not a de Polignac number, because 263878141 - 2¹⁷ = 263747069 is a prime.

It is equal to p_14395981 and since 263878141 and 14395981 have the same sum of digits, it is a Honaker prime.

It is a junction number, because it is equal to n+sod(n) for n = 263878094 and 263878103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263878171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131939070 + 131939071.

It is an arithmetic number, because the mean of its divisors is an integer number (131939071).

Almost surely, 2^263878141 is an apocalyptic number.

It is an amenable number.

263878141 is a deficient number, since it is larger than the sum of its proper divisors (1).

263878141 is an equidigital number, since it uses as much as digits as its factorization.

263878141 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64512, while the sum is 40.

The square root of 263878141 is about 16244.3264249399. The cubic root of 263878141 is about 641.4081470393.

The spelling of 263878141 in words is "two hundred sixty-three million, eight hundred seventy-eight thousand, one hundred forty-one".