2105470771 has 4 divisors (see below), whose sum is σ = 2105595000. Its totient is φ = 2105346544.

The previous prime is 2105470729. The next prime is 2105470817. The reversal of 2105470771 is 1770745012.

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-2105470771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2105470271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31741 + ... + 72238.

It is an arithmetic number, because the mean of its divisors is an integer number (526398750).

Almost surely, 2^2105470771 is an apocalyptic number.

2105470771 is a deficient number, since it is larger than the sum of its proper divisors (124229).

2105470771 is a wasteful number, since it uses less digits than its factorization.

2105470771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124228.

The product of its (nonzero) digits is 13720, while the sum is 34.

The square root of 2105470771 is about 45885.4091297005. The cubic root of 2105470771 is about 1281.6902253869.

The spelling of 2105470771 in words is "two billion, one hundred five million, four hundred seventy thousand, seven hundred seventy-one".