1135163989 has 4 divisors (see below), whose sum is σ = 1135976800. Its totient is φ = 1134351180.

The previous prime is 1135163971. The next prime is 1135163993. The reversal of 1135163989 is 9893615311.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1135163989 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 (1135163929) 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, 404307 + ... + 407104.

It is an arithmetic number, because the mean of its divisors is an integer number (283994200).

Almost surely, 2^1135163989 is an apocalyptic number.

It is an amenable number.

1135163989 is a deficient number, since it is larger than the sum of its proper divisors (812811).

1135163989 is an equidigital number, since it uses as much as digits as its factorization.

1135163989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812810.

The product of its digits is 174960, while the sum is 46.

The square root of 1135163989 is about 33692.1947786130. The cubic root of 1135163989 is about 1043.1646665890.

The spelling of 1135163989 in words is "one billion, one hundred thirty-five million, one hundred sixty-three thousand, nine hundred eighty-nine".