1218498480 has 240 divisors, whose sum is σ = 4208480640. Its totient is φ = 315850752.

The previous prime is 1218498473. The next prime is 1218498517. The reversal of 1218498480 is 848948121.

1218498480 is a `hidden beast` number, since 1 + 2 + 1 + 84 + 98 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5098201 + ... + 5098439.

It is an arithmetic number, because the mean of its divisors is an integer number (17535336).

Almost surely, 2^1218498480 is an apocalyptic number.

1218498480 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 1218498480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2104240320).

1218498480 is an abundant number, since it is smaller than the sum of its proper divisors (2989982160).

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

1218498480 is a wasteful number, since it uses less digits than its factorization.

1218498480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 419 counting only the distinct ones).

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

The square root of 1218498480 is about 34906.9975792820. The cubic root of 1218498480 is about 1068.0911844041.

The spelling of 1218498480 in words is "one billion, two hundred eighteen million, four hundred ninety-eight thousand, four hundred eighty".