2173623573 has 32 divisors (see below), whose sum is σ = 3301378560. Its totient is φ = 1259975360.

The previous prime is 2173623511. The next prime is 2173623601. The reversal of 2173623573 is 3753263712.

It is a cyclic number.

It is not a de Polignac number, because 2173623573 - 2⁶ = 2173623509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173623973) 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, 91786 + ... + 113012.

It is an arithmetic number, because the mean of its divisors is an integer number (103168080).

Almost surely, 2^2173623573 is an apocalyptic number.

It is an amenable number.

2173623573 is a deficient number, since it is larger than the sum of its proper divisors (1127754987).

2173623573 is a wasteful number, since it uses less digits than its factorization.

2173623573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21377.

The product of its digits is 158760, while the sum is 39.

The square root of 2173623573 is about 46622.1360836245. The cubic root of 2173623573 is about 1295.3728145514.

The spelling of 2173623573 in words is "two billion, one hundred seventy-three million, six hundred twenty-three thousand, five hundred seventy-three".