1118822999 has 16 divisors (see below), whose sum is σ = 1346899200. Its totient is φ = 907879104.

The previous prime is 1118822981. The next prime is 1118823001. The reversal of 1118822999 is 9992288111.

It is a cyclic number.

It is not a de Polignac number, because 1118822999 - 2²⁸ = 850387543 is a prime.

It is a Duffinian number.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118822099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is an upside-down number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 314372 + ... + 317910.

It is an arithmetic number, because the mean of its divisors is an integer number (84181200).

Almost surely, 2^1118822999 is an apocalyptic number.

1118822999 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1118822999 is a deficient number, since it is larger than the sum of its proper divisors (228076201).

1118822999 is a wasteful number, since it uses less digits than its factorization.

1118822999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5942.

The product of its digits is 186624, while the sum is 50.

The square root of 1118822999 is about 33448.8116231354. The cubic root of 1118822999 is about 1038.1349088898.

The spelling of 1118822999 in words is "one billion, one hundred eighteen million, eight hundred twenty-two thousand, nine hundred ninety-nine".