320918086 has 4 divisors (see below), whose sum is σ = 481377132. Its totient is φ = 160459042.

The previous prime is 320918077. The next prime is 320918093. The reversal of 320918086 is 680819023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 680819023 = 18307 ⋅37189.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80229520 + ... + 80229523.

It is an arithmetic number, because the mean of its divisors is an integer number (120344283).

Almost surely, 2^320918086 is an apocalyptic number.

320918086 is a deficient number, since it is larger than the sum of its proper divisors (160459046).

320918086 is a wasteful number, since it uses less digits than its factorization.

320918086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160459045.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 320918086 is about 17914.1867244930. The cubic root of 320918086 is about 684.6438811720.

The spelling of 320918086 in words is "three hundred twenty million, nine hundred eighteen thousand, eighty-six".