263900453 has 2 divisors, whose sum is σ = 263900454. Its totient is φ = 263900452.

The previous prime is 263900437. The next prime is 263900479. The reversal of 263900453 is 354009362.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158180929 + 105719524 = 12577^2 + 10282^2 .

It is a cyclic number.

It is not a de Polignac number, because 263900453 - 2⁴ = 263900437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (263902453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131950226 + 131950227.

It is an arithmetic number, because the mean of its divisors is an integer number (131950227).

Almost surely, 2^263900453 is an apocalyptic number.

It is an amenable number.

263900453 is a deficient number, since it is larger than the sum of its proper divisors (1).

263900453 is an equidigital number, since it uses as much as digits as its factorization.

263900453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 263900453 is about 16245.0131732787. The cubic root of 263900453 is about 641.4262244432.

The spelling of 263900453 in words is "two hundred sixty-three million, nine hundred thousand, four hundred fifty-three".