1213364218 has 64 divisors (see below), whose sum is σ = 2121541632. Its totient is φ = 515078080.

The previous prime is 1213364213. The next prime is 1213364261. The reversal of 1213364218 is 8124633121.

It is a self number, because there is not a number n which added to its sum of digits gives 1213364218.

It is not an unprimeable number, because it can be changed into a prime (1213364213) 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 31 ways as a sum of consecutive naturals, for example, 7013580 + ... + 7013752.

It is an arithmetic number, because the mean of its divisors is an integer number (33149088).

Almost surely, 2^1213364218 is an apocalyptic number.

1213364218 is a deficient number, since it is larger than the sum of its proper divisors (908177414).

1213364218 is a wasteful number, since it uses less digits than its factorization.

1213364218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459.

The product of its digits is 6912, while the sum is 31.

The square root of 1213364218 is about 34833.3779297960. The cubic root of 1213364218 is about 1066.5889036843.

Adding to 1213364218 its reverse (8124633121), we get a palindrome (9337997339).

The spelling of 1213364218 in words is "one billion, two hundred thirteen million, three hundred sixty-four thousand, two hundred eighteen".