320163919 has 2 divisors, whose sum is σ = 320163920. Its totient is φ = 320163918.

The previous prime is 320163821. The next prime is 320163959. The reversal of 320163919 is 919361023.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 320163919 - 2⁷ = 320163791 is a prime.

It is a super-2 number, since 2×320163919² = 205009870058877122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (320163959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160081959 + 160081960.

It is an arithmetic number, because the mean of its divisors is an integer number (160081960).

Almost surely, 2^320163919 is an apocalyptic number.

320163919 is a deficient number, since it is larger than the sum of its proper divisors (1).

320163919 is an equidigital number, since it uses as much as digits as its factorization.

320163919 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 320163919 is about 17893.1249087464. The cubic root of 320163919 is about 684.1071493791.

The spelling of 320163919 in words is "three hundred twenty million, one hundred sixty-three thousand, nine hundred nineteen".