1118230280 has 32 divisors (see below), whose sum is σ = 2584022040. Its totient is φ = 435202560.

The previous prime is 1118230277. The next prime is 1118230331. The reversal of 1118230280 is 820328111.

It can be written as a sum of positive squares in 4 ways, for example, as 1098392164 + 19838116 = 33142^2 + 4454^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 376301 + ... + 379260.

Almost surely, 2^1118230280 is an apocalyptic number.

1118230280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1118230280 is an abundant number, since it is smaller than the sum of its proper divisors (1465791760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1118230280 is a wasteful number, since it uses less digits than its factorization.

1118230280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755609 (or 755605 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 26.

The square root of 1118230280 is about 33439.9503588148. The cubic root of 1118230280 is about 1037.9515522202.

Adding to 1118230280 its reverse (820328111), we get a palindrome (1938558391).

The spelling of 1118230280 in words is "one billion, one hundred eighteen million, two hundred thirty thousand, two hundred eighty".