1118667887 has 4 divisors (see below), whose sum is σ = 1132828320. Its totient is φ = 1104507456.

The previous prime is 1118667871. The next prime is 1118667889. The reversal of 1118667887 is 7887668111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7887668111 = 6703 ⋅1176737.

It is a cyclic number.

It is not a de Polignac number, because 1118667887 - 2⁴ = 1118667871 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1118667889) 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, 7080098 + ... + 7080255.

It is an arithmetic number, because the mean of its divisors is an integer number (283207080).

Almost surely, 2^1118667887 is an apocalyptic number.

1118667887 is a deficient number, since it is larger than the sum of its proper divisors (14160433).

1118667887 is an equidigital number, since it uses as much as digits as its factorization.

1118667887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14160432.

The product of its digits is 903168, while the sum is 53.

The square root of 1118667887 is about 33446.4928953695. The cubic root of 1118667887 is about 1038.0869314992.

The spelling of 1118667887 in words is "one billion, one hundred eighteen million, six hundred sixty-seven thousand, eight hundred eighty-seven".