263040163 has 4 divisors (see below), whose sum is σ = 264189040. Its totient is φ = 261891288.

The previous prime is 263040149. The next prime is 263040181. The reversal of 263040163 is 361040362.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 361040362 = 2 ⋅180520181.

It is a cyclic number.

It is not a de Polignac number, because 263040163 - 2²⁵ = 229485731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263040103) 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 in 3 ways as a sum of consecutive naturals, for example, 574095 + ... + 574552.

It is an arithmetic number, because the mean of its divisors is an integer number (66047260).

Almost surely, 2^263040163 is an apocalyptic number.

263040163 is a deficient number, since it is larger than the sum of its proper divisors (1148877).

263040163 is a wasteful number, since it uses less digits than its factorization.

263040163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148876.

The product of its (nonzero) digits is 2592, while the sum is 25.

The square root of 263040163 is about 16218.5129712930. The cubic root of 263040163 is about 640.7284698326.

The spelling of 263040163 in words is "two hundred sixty-three million, forty thousand, one hundred sixty-three".