320755189 has 8 divisors (see below), whose sum is σ = 328782080. Its totient is φ = 312754176.

The previous prime is 320755187. The next prime is 320755231. The reversal of 320755189 is 981557023.

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

It is a cyclic number.

It is not a de Polignac number, because 320755189 - 2¹ = 320755187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320755181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19957 + ... + 32245.

It is an arithmetic number, because the mean of its divisors is an integer number (41097760).

Almost surely, 2^320755189 is an apocalyptic number.

It is an amenable number.

320755189 is a deficient number, since it is larger than the sum of its proper divisors (8026891).

320755189 is a wasteful number, since it uses less digits than its factorization.

320755189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12939.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 320755189 is about 17909.6395552786. The cubic root of 320755189 is about 684.5280205473.

The spelling of 320755189 in words is "three hundred twenty million, seven hundred fifty-five thousand, one hundred eighty-nine".