2105878111 has 8 divisors (see below), whose sum is σ = 2236185360. Its totient is φ = 1976285568.

The previous prime is 2105878109. The next prime is 2105878127. The reversal of 2105878111 is 1118785012.

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 2105878111 - 2¹ = 2105878109 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 (2105878141) 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, 172596 + ... + 184393.

It is an arithmetic number, because the mean of its divisors is an integer number (279523170).

Almost surely, 2^2105878111 is an apocalyptic number.

2105878111 is a deficient number, since it is larger than the sum of its proper divisors (130307249).

2105878111 is a wasteful number, since it uses less digits than its factorization.

2105878111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357353.

The product of its (nonzero) digits is 4480, while the sum is 34.

The square root of 2105878111 is about 45889.8475809192. The cubic root of 2105878111 is about 1281.7728751579.

The spelling of 2105878111 in words is "two billion, one hundred five million, eight hundred seventy-eight thousand, one hundred eleven".