1161066263 has 16 divisors (see below), whose sum is σ = 1359536640. Its totient is φ = 970806816.

The previous prime is 1161066211. The next prime is 1161066293. The reversal of 1161066263 is 3626601611.

It is not a de Polignac number, because 1161066263 - 2⁸ = 1161066007 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161066293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289073 + ... + 293061.

It is an arithmetic number, because the mean of its divisors is an integer number (84971040).

Almost surely, 2^1161066263 is an apocalyptic number.

1161066263 is a deficient number, since it is larger than the sum of its proper divisors (198470377).

1161066263 is an equidigital number, since it uses as much as digits as its factorization.

1161066263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5006.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 1161066263 is about 34074.4224162347. The cubic root of 1161066263 is about 1051.0394130557.

Adding to 1161066263 its reverse (3626601611), we get a palindrome (4787667874).

The spelling of 1161066263 in words is "one billion, one hundred sixty-one million, sixty-six thousand, two hundred sixty-three".