1118478643 has 8 divisors (see below), whose sum is σ = 1179162000. Its totient is φ = 1057976928.

The previous prime is 1118478629. The next prime is 1118478689. The reversal of 1118478643 is 3468748111.

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

It is a cyclic number.

It is not a de Polignac number, because 1118478643 - 2⁵ = 1118478611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1118478643.

It is not an unprimeable number, because it can be changed into a prime (1118478443) 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, 32668 + ... + 57481.

It is an arithmetic number, because the mean of its divisors is an integer number (147395250).

Almost surely, 2^1118478643 is an apocalyptic number.

1118478643 is a deficient number, since it is larger than the sum of its proper divisors (60683357).

1118478643 is an equidigital number, since it uses as much as digits as its factorization.

1118478643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90821.

The product of its digits is 129024, while the sum is 43.

The square root of 1118478643 is about 33443.6637197542. The cubic root of 1118478643 is about 1038.0283907996.

The spelling of 1118478643 in words is "one billion, one hundred eighteen million, four hundred seventy-eight thousand, six hundred forty-three".