1218064968 has 48 divisors (see below), whose sum is σ = 3328142220. Its totient is φ = 402425856.

The previous prime is 1218064961. The next prime is 1218064979. The reversal of 1218064968 is 8694608121.

It can be written as a sum of positive squares in 2 ways, for example, as 796255524 + 421809444 = 28218^2 + 20538^2 .

It is not an unprimeable number, because it can be changed into a prime (1218064961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66721 + ... + 82992.

Almost surely, 2^1218064968 is an apocalyptic number.

1218064968 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1218064968 is an abundant number, since it is smaller than the sum of its proper divisors (2110077252).

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

1218064968 is a wasteful number, since it uses less digits than its factorization.

1218064968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149838 (or 149831 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The square root of 1218064968 is about 34900.7874982786. The cubic root of 1218064968 is about 1067.9645024603.

The spelling of 1218064968 in words is "one billion, two hundred eighteen million, sixty-four thousand, nine hundred sixty-eight".