1066395263 has 4 divisors (see below), whose sum is σ = 1066711128. Its totient is φ = 1066079400.

The previous prime is 1066395247. The next prime is 1066395271. The reversal of 1066395263 is 3625936601.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1066395263 - 2⁴ = 1066395247 is a prime.

It is a super-2 number, since 2×1066395263² = 2274397713897678338, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1066395263.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1066395283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152813 + ... + 159638.

It is an arithmetic number, because the mean of its divisors is an integer number (266677782).

Almost surely, 2^1066395263 is an apocalyptic number.

1066395263 is a deficient number, since it is larger than the sum of its proper divisors (315865).

1066395263 is an equidigital number, since it uses as much as digits as its factorization.

1066395263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315864.

The product of its (nonzero) digits is 174960, while the sum is 41.

The square root of 1066395263 is about 32655.7079696644. The cubic root of 1066395263 is about 1021.6592445115.

The spelling of 1066395263 in words is "one billion, sixty-six million, three hundred ninety-five thousand, two hundred sixty-three".