268138045 has 12 divisors (see below), whose sum is σ = 374299164. Its totient is φ = 183865920.

The previous prime is 268138033. The next prime is 268138049. The reversal of 268138045 is 540831862.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 114105124 + 154032921 = 10682^2 + 12411^2 .

It is not a de Polignac number, because 268138045 - 2¹¹ = 268135997 is a prime.

It is a super-2 number, since 2×268138045² = 143796022352844050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268137995 and 268138013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268138049) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 546976 + ... + 547465.

It is an arithmetic number, because the mean of its divisors is an integer number (31191597).

Almost surely, 2^268138045 is an apocalyptic number.

It is an amenable number.

268138045 is a deficient number, since it is larger than the sum of its proper divisors (106161119).

268138045 is a wasteful number, since it uses less digits than its factorization.

268138045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1094460 (or 1094453 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 268138045 is about 16374.9212211845. The cubic root of 268138045 is about 644.8412525213.

The spelling of 268138045 in words is "two hundred sixty-eight million, one hundred thirty-eight thousand, forty-five".