1228786318 has 64 divisors (see below), whose sum is σ = 2041744320. Its totient is φ = 553190400.

The previous prime is 1228786253. The next prime is 1228786319. The reversal of 1228786318 is 8136878221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228786319) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6237396 + ... + 6237592.

It is an arithmetic number, because the mean of its divisors is an integer number (31902255).

Almost surely, 2^1228786318 is an apocalyptic number.

1228786318 is a deficient number, since it is larger than the sum of its proper divisors (812958002).

1228786318 is a wasteful number, since it uses less digits than its factorization.

1228786318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373.

The product of its digits is 258048, while the sum is 46.

The square root of 1228786318 is about 35054.0485250991. The cubic root of 1228786318 is about 1071.0887447775.

The spelling of 1228786318 in words is "one billion, two hundred twenty-eight million, seven hundred eighty-six thousand, three hundred eighteen".