2172430445 has 16 divisors (see below), whose sum is σ = 2690694720. Its totient is φ = 1682972544.

The previous prime is 2172430441. The next prime is 2172430451. The reversal of 2172430445 is 5440342712.

It is a cyclic number.

It is not a de Polignac number, because 2172430445 - 2² = 2172430441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172430441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35192 + ... + 74721.

It is an arithmetic number, because the mean of its divisors is an integer number (168168420).

Almost surely, 2^2172430445 is an apocalyptic number.

It is an amenable number.

2172430445 is a deficient number, since it is larger than the sum of its proper divisors (518264275).

2172430445 is a wasteful number, since it uses less digits than its factorization.

2172430445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110044.

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 2172430445 is about 46609.3386029023. The cubic root of 2172430445 is about 1295.1357559564.

The spelling of 2172430445 in words is "two billion, one hundred seventy-two million, four hundred thirty thousand, four hundred forty-five".