1228354218 has 192 divisors, whose sum is σ = 3569529600. Its totient is φ = 296110080.

The previous prime is 1228354201. The next prime is 1228354243. The reversal of 1228354218 is 8124538221.

It is a happy number.

1228354218 is a `hidden beast` number, since 1 + 22 + 83 + 542 + 18 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 901858 + ... + 903218.

It is an arithmetic number, because the mean of its divisors is an integer number (18591300).

Almost surely, 2^1228354218 is an apocalyptic number.

1228354218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228354218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1784764800).

1228354218 is an abundant number, since it is smaller than the sum of its proper divisors (2341175382).

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

1228354218 is a wasteful number, since it uses less digits than its factorization.

1228354218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1437 (or 1434 counting only the distinct ones).

The product of its digits is 30720, while the sum is 36.

The square root of 1228354218 is about 35047.8846437271. The cubic root of 1228354218 is about 1070.9631813930.

The spelling of 1228354218 in words is "one billion, two hundred twenty-eight million, three hundred fifty-four thousand, two hundred eighteen".