11181887 has 8 divisors (see below), whose sum is σ = 11889504. Its totient is φ = 10492768.

The previous prime is 11181883. The next prime is 11181901. The reversal of 11181887 is 78818111.

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 11181887 - 2² = 11181883 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 (11181883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3368 + ... + 5805.

It is an arithmetic number, because the mean of its divisors is an integer number (1486188).

Almost surely, 2^11181887 is an apocalyptic number.

11181887 is a deficient number, since it is larger than the sum of its proper divisors (707617).

11181887 is an equidigital number, since it uses as much as digits as its factorization.

11181887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9249.

The product of its digits is 3584, while the sum is 35.

The square root of 11181887 is about 3343.9328641586. The cubic root of 11181887 is about 223.6171113576.

Adding to 11181887 its reverse (78818111), we get a palindrome (89999998).

The spelling of 11181887 in words is "eleven million, one hundred eighty-one thousand, eight hundred eighty-seven".