268891839 has 64 divisors (see below), whose sum is σ = 441262080. Its totient is φ = 161118720.

The previous prime is 268891829. The next prime is 268891853. The reversal of 268891839 is 938198862.

It is a happy number.

It is not a de Polignac number, because 268891839 - 2⁴ = 268891823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268891829) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1205682 + ... + 1205904.

It is an arithmetic number, because the mean of its divisors is an integer number (6894720).

Almost surely, 2^268891839 is an apocalyptic number.

268891839 is a deficient number, since it is larger than the sum of its proper divisors (172370241).

268891839 is a wasteful number, since it uses less digits than its factorization.

268891839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357 (or 351 counting only the distinct ones).

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

The square root of 268891839 is about 16397.9217890561. The cubic root of 268891839 is about 645.4449498787. Note that the first 3 decimals are identical.

The spelling of 268891839 in words is "two hundred sixty-eight million, eight hundred ninety-one thousand, eight hundred thirty-nine".