1135838565 has 16 divisors (see below), whose sum is σ = 2019268800. Its totient is φ = 605780496.

The previous prime is 1135838551. The next prime is 1135838573. The reversal of 1135838565 is 5658385311.

1135838565 is a `hidden beast` number, since 1 + 1 + 3 + 5 + 83 + 8 + 565 = 666.

It is not a de Polignac number, because 1135838565 - 2⁴ = 1135838549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1135838565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4206675 + ... + 4206944.

It is an arithmetic number, because the mean of its divisors is an integer number (126204300).

Almost surely, 2^1135838565 is an apocalyptic number.

1135838565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1135838565 is a deficient number, since it is larger than the sum of its proper divisors (883430235).

1135838565 is an equidigital number, since it uses as much as digits as its factorization.

1135838565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8413633 (or 8413627 counting only the distinct ones).

The product of its digits is 432000, while the sum is 45.

The square root of 1135838565 is about 33702.2041564050. The cubic root of 1135838565 is about 1043.3712606758.

The spelling of 1135838565 in words is "one billion, one hundred thirty-five million, eight hundred thirty-eight thousand, five hundred sixty-five".