2172148871 has 8 divisors (see below), whose sum is σ = 2309549760. Its totient is φ = 2035817728.

The previous prime is 2172148841. The next prime is 2172148883. The reversal of 2172148871 is 1788412712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2172148871 - 2¹⁰ = 2172147847 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 (2172148831) 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, 263246 + ... + 271371.

It is an arithmetic number, because the mean of its divisors is an integer number (288693720).

Almost surely, 2^2172148871 is an apocalyptic number.

2172148871 is a deficient number, since it is larger than the sum of its proper divisors (137400889).

2172148871 is a wasteful number, since it uses less digits than its factorization.

2172148871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534873.

The product of its digits is 50176, while the sum is 41.

The square root of 2172148871 is about 46606.3179300833. The cubic root of 2172148871 is about 1295.0797983057.

The spelling of 2172148871 in words is "two billion, one hundred seventy-two million, one hundred forty-eight thousand, eight hundred seventy-one".