2047861171 has 4 divisors (see below), whose sum is σ = 2047961344. Its totient is φ = 2047761000.

The previous prime is 2047861159. The next prime is 2047861177. The reversal of 2047861171 is 1711687402.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1711687402 = 2 ⋅855843701.

It is a 3-Lehmer number, since φ(2047861171) divides (2047861171-1)³.

It is a cyclic number.

It is not a de Polignac number, because 2047861171 - 2¹¹ = 2047859123 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 2047861171.

It is not an unprimeable number, because it can be changed into a prime (2047861177) 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, 7155 + ... + 64396.

It is an arithmetic number, because the mean of its divisors is an integer number (511990336).

Almost surely, 2^2047861171 is an apocalyptic number.

2047861171 is the 28621-st heptagonal number.

2047861171 is a deficient number, since it is larger than the sum of its proper divisors (100173).

2047861171 is an equidigital number, since it uses as much as digits as its factorization.

2047861171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100172.

The product of its (nonzero) digits is 18816, while the sum is 37.

The square root of 2047861171 is about 45253.3001117046. The cubic root of 2047861171 is about 1269.8921459651.

The spelling of 2047861171 in words is "two billion, forty-seven million, eight hundred sixty-one thousand, one hundred seventy-one".