2111408687 has 8 divisors (see below), whose sum is σ = 2353273200. Its totient is φ = 1882617984.

The previous prime is 2111408669. The next prime is 2111408701. The reversal of 2111408687 is 7868041112.

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 not a de Polignac number, because 2111408687 - 2¹⁴ = 2111392303 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 2111408687.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111408087) 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, 3268112 + ... + 3268757.

It is an arithmetic number, because the mean of its divisors is an integer number (294159150).

Almost surely, 2^2111408687 is an apocalyptic number.

2111408687 is a deficient number, since it is larger than the sum of its proper divisors (241864513).

2111408687 is a wasteful number, since it uses less digits than its factorization.

2111408687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6536905.

The product of its (nonzero) digits is 21504, while the sum is 38.

The square root of 2111408687 is about 45950.0673231280. The cubic root of 2111408687 is about 1282.8939823909.

Adding to 2111408687 its reverse (7868041112), we get a palindrome (9979449799).

The spelling of 2111408687 in words is "two billion, one hundred eleven million, four hundred eight thousand, six hundred eighty-seven".