1118479547 has 4 divisors (see below), whose sum is σ = 1118583096. Its totient is φ = 1118376000.

The previous prime is 1118479519. The next prime is 1118479553. The reversal of 1118479547 is 7459748111.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7459748111 = 4561 ⋅1635551.

It is a cyclic number.

It is not a de Polignac number, because 1118479547 - 2⁸ = 1118479291 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1118479567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33398 + ... + 57899.

It is an arithmetic number, because the mean of its divisors is an integer number (279645774).

Almost surely, 2^1118479547 is an apocalyptic number.

1118479547 is a deficient number, since it is larger than the sum of its proper divisors (103549).

1118479547 is an equidigital number, since it uses as much as digits as its factorization.

1118479547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103548.

The product of its digits is 282240, while the sum is 47.

The square root of 1118479547 is about 33443.6772350171. The cubic root of 1118479547 is about 1038.0286704584.

The spelling of 1118479547 in words is "one billion, one hundred eighteen million, four hundred seventy-nine thousand, five hundred forty-seven".