268813279 has 4 divisors (see below), whose sum is σ = 307215184. Its totient is φ = 230411376.

The previous prime is 268813277. The next prime is 268813283. The reversal of 268813279 is 972318862.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 972318862 = 2 ⋅486159431.

It is a cyclic number.

It is not a de Polignac number, because 268813279 - 2¹ = 268813277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268813277) 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, 19200942 + ... + 19200955.

It is an arithmetic number, because the mean of its divisors is an integer number (76803796).

Almost surely, 2^268813279 is an apocalyptic number.

268813279 is a deficient number, since it is larger than the sum of its proper divisors (38401905).

268813279 is an equidigital number, since it uses as much as digits as its factorization.

268813279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38401904.

The product of its digits is 290304, while the sum is 46.

The square root of 268813279 is about 16395.5261885674. The cubic root of 268813279 is about 645.3820855756.

The spelling of 268813279 in words is "two hundred sixty-eight million, eight hundred thirteen thousand, two hundred seventy-nine".