268891158 has 16 divisors (see below), whose sum is σ = 538954416. Its totient is φ = 89435040.

The previous prime is 268891153. The next prime is 268891163. The reversal of 268891158 is 851198862.

It is an interprime number because it is at equal distance from previous prime (268891153) and next prime (268891163).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268891151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45841 + ... + 51372.

It is an arithmetic number, because the mean of its divisors is an integer number (33684651).

Almost surely, 2^268891158 is an apocalyptic number.

268891158 is an abundant number, since it is smaller than the sum of its proper divisors (270063258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268891158 is a wasteful number, since it uses less digits than its factorization.

268891158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97679.

The product of its digits is 276480, while the sum is 48.

The square root of 268891158 is about 16397.9010242165. The cubic root of 268891158 is about 645.4444049900. Note that the first 4 decimals are identical.

The spelling of 268891158 in words is "two hundred sixty-eight million, eight hundred ninety-one thousand, one hundred fifty-eight".