1218280896 has 168 divisors, whose sum is σ = 4066848864. Its totient is φ = 341452800.

The previous prime is 1218280801. The next prime is 1218280919. The reversal of 1218280896 is 6980828121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (168).

It is a congruent number.

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, 210846 + ... + 216546.

Almost surely, 2^1218280896 is an apocalyptic number.

1218280896 is a gapful number since it is divisible by the number (16) 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 1218280896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2033424432).

1218280896 is an abundant number, since it is smaller than the sum of its proper divisors (2848567968).

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

1218280896 is a wasteful number, since it uses less digits than its factorization.

1218280896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5779 (or 5766 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The square root of 1218280896 is about 34903.8808157488. The cubic root of 1218280896 is about 1068.0276052285.

The spelling of 1218280896 in words is "one billion, two hundred eighteen million, two hundred eighty thousand, eight hundred ninety-six".