268472161 has 2 divisors, whose sum is σ = 268472162. Its totient is φ = 268472160.

The previous prime is 268472159. The next prime is 268472167. The reversal of 268472161 is 161274862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 194769936 + 73702225 = 13956^2 + 8585^2 .

It is a cyclic number.

It is not a de Polignac number, because 268472161 - 2¹ = 268472159 is a prime.

Together with 268472159, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 268472161.

It is not a weakly prime, because it can be changed into another prime (268472167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134236080 + 134236081.

It is an arithmetic number, because the mean of its divisors is an integer number (134236081).

Almost surely, 2^268472161 is an apocalyptic number.

It is an amenable number.

268472161 is a deficient number, since it is larger than the sum of its proper divisors (1).

268472161 is an equidigital number, since it uses as much as digits as its factorization.

268472161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 32256, while the sum is 37.

The square root of 268472161 is about 16385.1201094163. The cubic root of 268472161 is about 645.1089782410.

The spelling of 268472161 in words is "two hundred sixty-eight million, four hundred seventy-two thousand, one hundred sixty-one".