320181968 has 10 divisors (see below), whose sum is σ = 620352594. Its totient is φ = 160090976.

The previous prime is 320181959. The next prime is 320181971. The reversal of 320181968 is 869181023.

It can be written as a sum of positive squares in only one way, i.e., 251159104 + 69022864 = 15848^2 + 8308^2 .

It is a congruent number.

It is an unprimeable number.

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, 10005671 + ... + 10005702.

Almost surely, 2^320181968 is an apocalyptic number.

It is an amenable number.

320181968 is a deficient number, since it is larger than the sum of its proper divisors (300170626).

320181968 is a wasteful number, since it uses less digits than its factorization.

320181968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20011381 (or 20011375 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 320181968 is about 17893.6292573642. The cubic root of 320181968 is about 684.1200044795.

The spelling of 320181968 in words is "three hundred twenty million, one hundred eighty-one thousand, nine hundred sixty-eight".