1118280384 has 224 divisors, whose sum is σ = 3598103040. Its totient is φ = 338494464.

The previous prime is 1118280347. The next prime is 1118280389. The reversal of 1118280384 is 4830828111.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is not an unprimeable number, because it can be changed into a prime (1118280389) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1504717 + ... + 1505459.

It is an arithmetic number, because the mean of its divisors is an integer number (16062960).

Almost surely, 2^1118280384 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1118280384, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1799051520).

1118280384 is an abundant number, since it is smaller than the sum of its proper divisors (2479822656).

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

1118280384 is a wasteful number, since it uses less digits than its factorization.

1118280384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844 (or 828 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 36.

The square root of 1118280384 is about 33440.6995142147. The cubic root of 1118280384 is about 1037.9670543187.

The spelling of 1118280384 in words is "one billion, one hundred eighteen million, two hundred eighty thousand, three hundred eighty-four".