263361473 has 2 divisors, whose sum is σ = 263361474. Its totient is φ = 263361472.

The previous prime is 263361457. The next prime is 263361479. The reversal of 263361473 is 374163362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147088384 + 116273089 = 12128^2 + 10783^2 .

It is a cyclic number.

It is not a de Polignac number, because 263361473 - 2⁴ = 263361457 is a prime.

It is not a weakly prime, because it can be changed into another prime (263361479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131680736 + 131680737.

It is an arithmetic number, because the mean of its divisors is an integer number (131680737).

Almost surely, 2^263361473 is an apocalyptic number.

It is an amenable number.

263361473 is a deficient number, since it is larger than the sum of its proper divisors (1).

263361473 is an equidigital number, since it uses as much as digits as its factorization.

263361473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 35.

The square root of 263361473 is about 16228.4156035024. The cubic root of 263361473 is about 640.9892521824.

The spelling of 263361473 in words is "two hundred sixty-three million, three hundred sixty-one thousand, four hundred seventy-three".