1218984480 has 576 divisors, whose sum is σ = 5072191488. Its totient is φ = 260720640.

The previous prime is 1218984479. The next prime is 1218984491. The reversal of 1218984480 is 844898121.

1218984480 is a `hidden beast` number, since 12 + 1 + 89 + 84 + 480 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14686519 + ... + 14686601.

It is an arithmetic number, because the mean of its divisors is an integer number (8805888).

Almost surely, 2^1218984480 is an apocalyptic number.

1218984480 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 1218984480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2536095744).

1218984480 is an abundant number, since it is smaller than the sum of its proper divisors (3853207008).

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

1218984480 is a wasteful number, since it uses less digits than its factorization.

1218984480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 178 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 1218984480 is about 34913.9582402225. The cubic root of 1218984480 is about 1068.2331688015.

It can be divided in two parts, 12189 and 84480, that added together give a palindrome (96669).

The spelling of 1218984480 in words is "one billion, two hundred eighteen million, nine hundred eighty-four thousand, four hundred eighty".