1118320672 has 48 divisors (see below), whose sum is σ = 2518508160. Its totient is φ = 478844928.

The previous prime is 1118320661. The next prime is 1118320703. The reversal of 1118320672 is 2760238111.

It is a super-2 number, since 2×1118320672² = 2501282250845063168, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 419568 + ... + 422224.

It is an arithmetic number, because the mean of its divisors is an integer number (52468920).

Almost surely, 2^1118320672 is an apocalyptic number.

It is an amenable number.

1118320672 is an abundant number, since it is smaller than the sum of its proper divisors (1400187488).

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

1118320672 is a wasteful number, since it uses less digits than its factorization.

1118320672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4553 (or 4545 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1118320672 is about 33441.3018885330. The cubic root of 1118320672 is about 1037.9795190264.

Adding to 1118320672 its reverse (2760238111), we get a palindrome (3878558783).

The spelling of 1118320672 in words is "one billion, one hundred eighteen million, three hundred twenty thousand, six hundred seventy-two".