263442073 has 2 divisors, whose sum is σ = 263442074. Its totient is φ = 263442072.

The previous prime is 263442043. The next prime is 263442077. The reversal of 263442073 is 370244362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 179774464 + 83667609 = 13408^2 + 9147^2 .

It is a cyclic number.

It is not a de Polignac number, because 263442073 - 2⁵ = 263442041 is a prime.

It is not a weakly prime, because it can be changed into another prime (263442077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131721036 + 131721037.

It is an arithmetic number, because the mean of its divisors is an integer number (131721037).

Almost surely, 2^263442073 is an apocalyptic number.

It is an amenable number.

263442073 is a deficient number, since it is larger than the sum of its proper divisors (1).

263442073 is an equidigital number, since it uses as much as digits as its factorization.

263442073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 31.

The square root of 263442073 is about 16230.8987120245. The cubic root of 263442073 is about 641.0546356565.

The spelling of 263442073 in words is "two hundred sixty-three million, four hundred forty-two thousand, seventy-three".