1118180252 has 12 divisors (see below), whose sum is σ = 2236360560. Its totient is φ = 479220096.

The previous prime is 1118180251. The next prime is 1118180279. The reversal of 1118180252 is 2520818111.

1118180252 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118180251) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 19967477 + ... + 19967532.

It is an arithmetic number, because the mean of its divisors is an integer number (186363380).

Almost surely, 2^1118180252 is an apocalyptic number.

It is an amenable number.

1118180252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1118180252 is a wasteful number, since it uses less digits than its factorization.

1118180252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39935020 (or 39935018 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 29.

The square root of 1118180252 is about 33439.2023230220. The cubic root of 1118180252 is about 1037.9360731739.

Adding to 1118180252 its reverse (2520818111), we get a palindrome (3638998363).

The spelling of 1118180252 in words is "one billion, one hundred eighteen million, one hundred eighty thousand, two hundred fifty-two".