268981893 has 12 divisors (see below), whose sum is σ = 396796608. Its totient is φ = 175505640.

The previous prime is 268981883. The next prime is 268981901. The reversal of 268981893 is 398189862.

It is a happy number.

It is not a de Polignac number, because 268981893 - 2⁴ = 268981877 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268981883) 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, 317523 + ... + 318368.

It is an arithmetic number, because the mean of its divisors is an integer number (33066384).

Almost surely, 2^268981893 is an apocalyptic number.

It is an amenable number.

268981893 is a deficient number, since it is larger than the sum of its proper divisors (127814715).

268981893 is a wasteful number, since it uses less digits than its factorization.

268981893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635944 (or 635941 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The square root of 268981893 is about 16400.6674559300. The cubic root of 268981893 is about 645.5169967063.

The spelling of 268981893 in words is "two hundred sixty-eight million, nine hundred eighty-one thousand, eight hundred ninety-three".