1131446218 has 16 divisors (see below), whose sum is σ = 1959620544. Its totient is φ = 479905920.

The previous prime is 1131446213. The next prime is 1131446221. The reversal of 1131446218 is 8126441311.

It is a self number, because there is not a number n which added to its sum of digits gives 1131446218.

It is not an unprimeable number, because it can be changed into a prime (1131446213) by changing a digit.

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

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415228 + ... + 417943.

It is an arithmetic number, because the mean of its divisors is an integer number (122476284).

Almost surely, 2^1131446218 is an apocalyptic number.

1131446218 is a deficient number, since it is larger than the sum of its proper divisors (828174326).

1131446218 is an equidigital number, since it uses as much as digits as its factorization.

1131446218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 833277.

The product of its digits is 4608, while the sum is 31.

The square root of 1131446218 is about 33636.9769450229. The cubic root of 1131446218 is about 1042.0245996086.

Adding to 1131446218 its reverse (8126441311), we get a palindrome (9257887529).

The spelling of 1131446218 in words is "one billion, one hundred thirty-one million, four hundred forty-six thousand, two hundred eighteen".