2105044871 has 4 divisors (see below), whose sum is σ = 2105283192. Its totient is φ = 2104806552.

The previous prime is 2105044861. The next prime is 2105044901. The reversal of 2105044871 is 1784405012.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2105044871 is a prime.

It is a super-3 number, since 3×2105044871³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2105044861) 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, 105380 + ... + 123753.

It is an arithmetic number, because the mean of its divisors is an integer number (526320798).

Almost surely, 2^2105044871 is an apocalyptic number.

2105044871 is a deficient number, since it is larger than the sum of its proper divisors (238321).

2105044871 is an equidigital number, since it uses as much as digits as its factorization.

2105044871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238320.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 2105044871 is about 45880.7679861617. The cubic root of 2105044871 is about 1281.6037983693.

Adding to 2105044871 its reverse (1784405012), we get a palindrome (3889449883).

The spelling of 2105044871 in words is "two billion, one hundred five million, forty-four thousand, eight hundred seventy-one".