1218334884 has 48 divisors (see below), whose sum is σ = 3095890560. Its totient is φ = 370656000.

The previous prime is 1218334879. The next prime is 1218334913. The reversal of 1218334884 is 4884338121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29992 + ... + 57759.

It is an arithmetic number, because the mean of its divisors is an integer number (64497720).

Almost surely, 2^1218334884 is an apocalyptic number.

It is an amenable number.

1218334884 is an abundant number, since it is smaller than the sum of its proper divisors (1877555676).

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

1218334884 is a wasteful number, since it uses less digits than its factorization.

1218334884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87860 (or 87858 counting only the distinct ones).

The product of its digits is 147456, while the sum is 42.

The square root of 1218334884 is about 34904.6541882311. The cubic root of 1218334884 is about 1068.0433815088.

The spelling of 1218334884 in words is "one billion, two hundred eighteen million, three hundred thirty-four thousand, eight hundred eighty-four".