1111481887 has 8 divisors (see below), whose sum is σ = 1144646336. Its totient is φ = 1078481952.

The previous prime is 1111481881. The next prime is 1111481909. The reversal of 1111481887 is 7881841111.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111481887 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 (1111481881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27348 + ... + 54505.

It is an arithmetic number, because the mean of its divisors is an integer number (143080792).

Almost surely, 2^1111481887 is an apocalyptic number.

1111481887 is a deficient number, since it is larger than the sum of its proper divisors (33164449).

1111481887 is an equidigital number, since it uses as much as digits as its factorization.

1111481887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82257.

The product of its digits is 14336, while the sum is 40.

The square root of 1111481887 is about 33338.8945077668. The cubic root of 1111481887 is about 1035.8593645281.

The spelling of 1111481887 in words is "one billion, one hundred eleven million, four hundred eighty-one thousand, eight hundred eighty-seven".