1135641263 has 4 divisors (see below), whose sum is σ = 1154889480. Its totient is φ = 1116393048.

The previous prime is 1135641233. The next prime is 1135641277. The reversal of 1135641263 is 3621465311.

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 1135641263 - 2⁸ = 1135641007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1135641203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9624020 + ... + 9624137.

It is an arithmetic number, because the mean of its divisors is an integer number (288722370).

Almost surely, 2^1135641263 is an apocalyptic number.

1135641263 is a deficient number, since it is larger than the sum of its proper divisors (19248217).

1135641263 is an equidigital number, since it uses as much as digits as its factorization.

1135641263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19248216.

The product of its digits is 12960, while the sum is 32.

The square root of 1135641263 is about 33699.2768913518. The cubic root of 1135641263 is about 1043.3108438866.

The spelling of 1135641263 in words is "one billion, one hundred thirty-five million, six hundred forty-one thousand, two hundred sixty-three".