1218888000 has 784 divisors, whose sum is σ = 5197083840. Its totient is φ = 279936000.

The previous prime is 1218887987. The next prime is 1218888023. The reversal of 1218888000 is 8888121.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 64151991 + ... + 64152009.

Almost surely, 2^1218888000 is an apocalyptic number.

1218888000 is a gapful number since it is divisible by the number (10) 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 1218888000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2598541920).

1218888000 is an abundant number, since it is smaller than the sum of its proper divisors (3978195840).

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

1218888000 is an equidigital number, since it uses as much as digits as its factorization.

1218888000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 36.

The square root of 1218888000 is about 34912.5765305284. The cubic root of 1218888000 is about 1068.2049852720.

The spelling of 1218888000 in words is "one billion, two hundred eighteen million, eight hundred eighty-eight thousand".