268311839 has 4 divisors (see below), whose sum is σ = 270242280. Its totient is φ = 266381400.

The previous prime is 268311821. The next prime is 268311847. The reversal of 268311839 is 938113862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 268311839 - 2²⁰ = 267263263 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268311796 and 268311805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268311889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965012 + ... + 965289.

It is an arithmetic number, because the mean of its divisors is an integer number (67560570).

Almost surely, 2^268311839 is an apocalyptic number.

268311839 is a deficient number, since it is larger than the sum of its proper divisors (1930441).

268311839 is a wasteful number, since it uses less digits than its factorization.

268311839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1930440.

The product of its digits is 62208, while the sum is 41.

The square root of 268311839 is about 16380.2270741281. The cubic root of 268311839 is about 644.9805406464.

The spelling of 268311839 in words is "two hundred sixty-eight million, three hundred eleven thousand, eight hundred thirty-nine".