2209145673 has 32 divisors (see below), whose sum is σ = 3541478400. Its totient is φ = 1198161216.

The previous prime is 2209145579. The next prime is 2209145677. The reversal of 2209145673 is 3765419022.

It is not a de Polignac number, because 2209145673 - 2²⁰ = 2208097097 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2209145677) 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, 5190 + ... + 66672.

It is an arithmetic number, because the mean of its divisors is an integer number (110671200).

Almost surely, 2^2209145673 is an apocalyptic number.

It is an amenable number.

2209145673 is a deficient number, since it is larger than the sum of its proper divisors (1332332727).

2209145673 is a wasteful number, since it uses less digits than its factorization.

2209145673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61581.

The product of its (nonzero) digits is 90720, while the sum is 39.

The square root of 2209145673 is about 47001.5496872178. The cubic root of 2209145673 is about 1302.3911952368.

The spelling of 2209145673 in words is "two billion, two hundred nine million, one hundred forty-five thousand, six hundred seventy-three".