1268485218 has 256 divisors, whose sum is σ = 3912007680. Its totient is φ = 293932800.

The previous prime is 1268485217. The next prime is 1268485223. The reversal of 1268485218 is 8125848621.

It is not an unprimeable number, because it can be changed into a prime (1268485217) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1675296 + ... + 1676052.

It is an arithmetic number, because the mean of its divisors is an integer number (15281280).

Almost surely, 2^1268485218 is an apocalyptic number.

1268485218 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 1268485218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1956003840).

1268485218 is an abundant number, since it is smaller than the sum of its proper divisors (2643522462).

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

1268485218 is a wasteful number, since it uses less digits than its factorization.

1268485218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830 (or 824 counting only the distinct ones).

The product of its digits is 245760, while the sum is 45.

The square root of 1268485218 is about 35615.8001173636. The cubic root of 1268485218 is about 1082.5014087564.

The spelling of 1268485218 in words is "one billion, two hundred sixty-eight million, four hundred eighty-five thousand, two hundred eighteen".