1118090788 has 12 divisors (see below), whose sum is σ = 1962204300. Its totient is φ = 557460992.

The previous prime is 1118090783. The next prime is 1118090791. The reversal of 1118090788 is 8870908111.

It can be written as a sum of positive squares in 2 ways, for example, as 201696804 + 916393984 = 14202^2 + 30272^2 .

It is not an unprimeable number, because it can be changed into a prime (1118090783) 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, 394513 + ... + 397336.

It is an arithmetic number, because the mean of its divisors is an integer number (163517025).

Almost surely, 2^1118090788 is an apocalyptic number.

It is an amenable number.

1118090788 is a deficient number, since it is larger than the sum of its proper divisors (844113512).

1118090788 is a wasteful number, since it uses less digits than its factorization.

1118090788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792206 (or 792204 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 43.

The square root of 1118090788 is about 33437.8645849283. The cubic root of 1118090788 is about 1037.9083911763.

Adding to 1118090788 its reverse (8870908111), we get a palindrome (9988998899).

The spelling of 1118090788 in words is "one billion, one hundred eighteen million, ninety thousand, seven hundred eighty-eight".