1135840913 has 4 divisors (see below), whose sum is σ = 1135940928. Its totient is φ = 1135740900.

The previous prime is 1135840903. The next prime is 1135840939. The reversal of 1135840913 is 3190485311.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1135840913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1135840903) 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, 30413 + ... + 56538.

It is an arithmetic number, because the mean of its divisors is an integer number (283985232).

Almost surely, 2^1135840913 is an apocalyptic number.

It is an amenable number.

1135840913 is a deficient number, since it is larger than the sum of its proper divisors (100015).

1135840913 is an equidigital number, since it uses as much as digits as its factorization.

1135840913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100014.

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 1135840913 is about 33702.2389909039. The cubic root of 1135840913 is about 1043.3719796260.

The spelling of 1135840913 in words is "one billion, one hundred thirty-five million, eight hundred forty thousand, nine hundred thirteen".