2165730206 has 8 divisors (see below), whose sum is σ = 3251491464. Its totient is φ = 1081899720.

The previous prime is 2165730197. The next prime is 2165730239. The reversal of 2165730206 is 6020375612.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 479885 + ... + 484376.

It is an arithmetic number, because the mean of its divisors is an integer number (406436433).

Almost surely, 2^2165730206 is an apocalyptic number.

2165730206 is a deficient number, since it is larger than the sum of its proper divisors (1085761258).

2165730206 is a wasteful number, since it uses less digits than its factorization.

2165730206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965386.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 2165730206 is about 46537.4065242145. The cubic root of 2165730206 is about 1293.8028930712.

The spelling of 2165730206 in words is "two billion, one hundred sixty-five million, seven hundred thirty thousand, two hundred six".