1116002565 has 24 divisors (see below), whose sum is σ = 1935287640. Its totient is φ = 594929664.

The previous prime is 1116002549. The next prime is 1116002581. The reversal of 1116002565 is 5652006111.

It is a happy number.

1116002565 is a `hidden beast` number, since 1 + 1 + 1 + 600 + 2 + 56 + 5 = 666.

It is an interprime number because it is at equal distance from previous prime (1116002549) and next prime (1116002581).

It can be written as a sum of positive squares in 4 ways, for example, as 2712609 + 1113289956 = 1647^2 + 33366^2 .

It is not a de Polignac number, because 1116002565 - 2⁴ = 1116002549 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129429 + ... + 137781.

It is an arithmetic number, because the mean of its divisors is an integer number (80636985).

Almost surely, 2^1116002565 is an apocalyptic number.

1116002565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1116002565 is a deficient number, since it is larger than the sum of its proper divisors (819285075).

1116002565 is a wasteful number, since it uses less digits than its factorization.

1116002565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11333 (or 11330 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The square root of 1116002565 is about 33406.6245675914. The cubic root of 1116002565 is about 1037.2618322033.

Adding to 1116002565 its reverse (5652006111), we get a palindrome (6768008676).

The spelling of 1116002565 in words is "one billion, one hundred sixteen million, two thousand, five hundred sixty-five".