1116800999 has 4 divisors (see below), whose sum is σ = 1118325336. Its totient is φ = 1115276664.

The previous prime is 1116800987. The next prime is 1116801053. The reversal of 1116800999 is 9990086111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9990086111 = 6961 ⋅1435151.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1116800999 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 (1116800929) 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, 761069 + ... + 762534.

It is an arithmetic number, because the mean of its divisors is an integer number (279581334).

Almost surely, 2^1116800999 is an apocalyptic number.

1116800999 is a deficient number, since it is larger than the sum of its proper divisors (1524337).

1116800999 is an equidigital number, since it uses as much as digits as its factorization.

1116800999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1524336.

The product of its (nonzero) digits is 34992, while the sum is 44.

The square root of 1116800999 is about 33418.5726655104. The cubic root of 1116800999 is about 1037.5091397850.

The spelling of 1116800999 in words is "one billion, one hundred sixteen million, eight hundred thousand, nine hundred ninety-nine".