268148381 has 2 divisors, whose sum is σ = 268148382. Its totient is φ = 268148380.

The previous prime is 268148371. The next prime is 268148399. The reversal of 268148381 is 183841862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245204281 + 22944100 = 15659^2 + 4790^2 .

It is a cyclic number.

It is not a de Polignac number, because 268148381 - 2⁶ = 268148317 is a prime.

It is a super-2 number, since 2×268148381² = 143807108465842322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (268148341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134074190 + 134074191.

It is an arithmetic number, because the mean of its divisors is an integer number (134074191).

Almost surely, 2^268148381 is an apocalyptic number.

It is an amenable number.

268148381 is a deficient number, since it is larger than the sum of its proper divisors (1).

268148381 is an equidigital number, since it uses as much as digits as its factorization.

268148381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73728, while the sum is 41.

The square root of 268148381 is about 16375.2368227150. The cubic root of 268148381 is about 644.8495380465.

The spelling of 268148381 in words is "two hundred sixty-eight million, one hundred forty-eight thousand, three hundred eighty-one".