268318081 has 4 divisors (see below), whose sum is σ = 268369200. Its totient is φ = 268266964.

The previous prime is 268318079. The next prime is 268318087. The reversal of 268318081 is 180813862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 268318081 - 2¹ = 268318079 is a prime.

It is a super-2 number, since 2×268318081² = 143989185183045122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 268318081.

It is not an unprimeable number, because it can be changed into a prime (268318087) 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 3 ways as a sum of consecutive naturals, for example, 16651 + ... + 28528.

It is an arithmetic number, because the mean of its divisors is an integer number (67092300).

Almost surely, 2^268318081 is an apocalyptic number.

It is an amenable number.

268318081 is a deficient number, since it is larger than the sum of its proper divisors (51119).

268318081 is an equidigital number, since it uses as much as digits as its factorization.

268318081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51118.

The product of its (nonzero) digits is 18432, while the sum is 37.

The square root of 268318081 is about 16380.4176076192. The cubic root of 268318081 is about 644.9855422114.

The spelling of 268318081 in words is "two hundred sixty-eight million, three hundred eighteen thousand, eighty-one".