2172944473 has 32 divisors (see below), whose sum is σ = 2654732288. Its totient is φ = 1739102400.

The previous prime is 2172944441. The next prime is 2172944479. The reversal of 2172944473 is 3744492712.

It is not a de Polignac number, because 2172944473 - 2⁵ = 2172944441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2172944479) 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, 1018618 + ... + 1020748.

It is an arithmetic number, because the mean of its divisors is an integer number (82960384).

Almost surely, 2^2172944473 is an apocalyptic number.

It is an amenable number.

2172944473 is a deficient number, since it is larger than the sum of its proper divisors (481787815).

2172944473 is a wasteful number, since it uses less digits than its factorization.

2172944473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2333.

The product of its digits is 338688, while the sum is 43.

The square root of 2172944473 is about 46614.8524935991. The cubic root of 2172944473 is about 1295.2378970925.

The spelling of 2172944473 in words is "two billion, one hundred seventy-two million, nine hundred forty-four thousand, four hundred seventy-three".