2729172171 has 32 divisors (see below), whose sum is σ = 4114833408. Its totient is φ = 1594628640.

The previous prime is 2729172143. The next prime is 2729172181. The reversal of 2729172171 is 1712719272.

It is not a de Polignac number, because 2729172171 - 2¹⁰ = 2729171147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2729172101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90786 + ... + 117048.

It is an arithmetic number, because the mean of its divisors is an integer number (128588544).

Almost surely, 2^2729172171 is an apocalyptic number.

2729172171 is a deficient number, since it is larger than the sum of its proper divisors (1385661237).

2729172171 is a wasteful number, since it uses less digits than its factorization.

2729172171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26391.

The product of its digits is 24696, while the sum is 39.

The square root of 2729172171 is about 52241.4794105221. The cubic root of 2729172171 is about 1397.4737044238.

The spelling of 2729172171 in words is "two billion, seven hundred twenty-nine million, one hundred seventy-two thousand, one hundred seventy-one".