1218037068 has 96 divisors (see below), whose sum is σ = 3219955200. Its totient is φ = 398115648.

The previous prime is 1218036991. The next prime is 1218037069. The reversal of 1218037068 is 8607308121.

It is a super-2 number, since 2×1218037068² = 2967228598044073248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1218037069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1259121 + ... + 1260087.

It is an arithmetic number, because the mean of its divisors is an integer number (33541200).

Almost surely, 2^1218037068 is an apocalyptic number.

1218037068 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1218037068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1609977600).

1218037068 is an abundant number, since it is smaller than the sum of its proper divisors (2001918132).

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

1218037068 is a wasteful number, since it uses less digits than its factorization.

1218037068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1196 (or 1188 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 1218037068 is about 34900.3877915418. The cubic root of 1218037068 is about 1067.9563484242.

The spelling of 1218037068 in words is "one billion, two hundred eighteen million, thirty-seven thousand, sixty-eight".