1116338721 has 8 divisors (see below), whose sum is σ = 1497365184. Its totient is φ = 739769040.

The previous prime is 1116338683. The next prime is 1116338723. The reversal of 1116338721 is 1278336111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1116338721 - 2⁷ = 1116338593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1116338723) 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 7 ways as a sum of consecutive naturals, for example, 1113610 + ... + 1114611.

It is an arithmetic number, because the mean of its divisors is an integer number (187170648).

Almost surely, 2^1116338721 is an apocalyptic number.

It is an amenable number.

1116338721 is a deficient number, since it is larger than the sum of its proper divisors (381026463).

1116338721 is a wasteful number, since it uses less digits than its factorization.

1116338721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228391.

The product of its digits is 6048, while the sum is 33.

The square root of 1116338721 is about 33411.6554663189. The cubic root of 1116338721 is about 1037.3659678018.

The spelling of 1116338721 in words is "one billion, one hundred sixteen million, three hundred thirty-eight thousand, seven hundred twenty-one".