268238473 has 2 divisors, whose sum is σ = 268238474. Its totient is φ = 268238472.

The previous prime is 268238431. The next prime is 268238479. The reversal of 268238473 is 374832862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 207273609 + 60964864 = 14397^2 + 7808^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268238473 is a prime.

It is not a weakly prime, because it can be changed into another prime (268238479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134119236 + 134119237.

It is an arithmetic number, because the mean of its divisors is an integer number (134119237).

Almost surely, 2^268238473 is an apocalyptic number.

It is an amenable number.

268238473 is a deficient number, since it is larger than the sum of its proper divisors (1).

268238473 is an equidigital number, since it uses as much as digits as its factorization.

268238473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 43.

The square root of 268238473 is about 16377.9874526756. The cubic root of 268238473 is about 644.9217484141.

The spelling of 268238473 in words is "two hundred sixty-eight million, two hundred thirty-eight thousand, four hundred seventy-three".