1216868700 has 36 divisors (see below), whose sum is σ = 3520807640. Its totient is φ = 324498240.

The previous prime is 1216868669. The next prime is 1216868701. The reversal of 1216868700 is 78686121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1216868701) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2027815 + ... + 2028414.

Almost surely, 2^1216868700 is an apocalyptic number.

1216868700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1216868700 is an abundant number, since it is smaller than the sum of its proper divisors (2303938940).

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

1216868700 is a wasteful number, since it uses less digits than its factorization.

1216868700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4056246 (or 4056239 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 1216868700 is about 34883.6451650340. The cubic root of 1216868700 is about 1067.6147700957.

The spelling of 1216868700 in words is "one billion, two hundred sixteen million, eight hundred sixty-eight thousand, seven hundred".