1218244200 has 96 divisors (see below), whose sum is σ = 3898440960. Its totient is φ = 314380800.

The previous prime is 1218244189. The next prime is 1218244229. The reversal of 1218244200 is 24428121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14149 + ... + 51348.

It is an arithmetic number, because the mean of its divisors is an integer number (40608760).

Almost surely, 2^1218244200 is an apocalyptic number.

1218244200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1218244200 is an abundant number, since it is smaller than the sum of its proper divisors (2680196760).

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

1218244200 is a wasteful number, since it uses less digits than its factorization.

1218244200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65547 (or 65538 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

The square root of 1218244200 is about 34903.3551395851. The cubic root of 1218244200 is about 1068.0168817206.

The spelling of 1218244200 in words is "one billion, two hundred eighteen million, two hundred forty-four thousand, two hundred".