268115791 has 4 divisors (see below), whose sum is σ = 268190272. Its totient is φ = 268041312.

The previous prime is 268115767. The next prime is 268115831. The reversal of 268115791 is 197511862.

It is a happy number.

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 268115791 - 2¹⁹ = 267591503 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 (268115291) 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, 31551 + ... + 39136.

It is an arithmetic number, because the mean of its divisors is an integer number (67047568).

Almost surely, 2^268115791 is an apocalyptic number.

268115791 is a deficient number, since it is larger than the sum of its proper divisors (74481).

268115791 is an equidigital number, since it uses as much as digits as its factorization.

268115791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74480.

The product of its digits is 30240, while the sum is 40.

The square root of 268115791 is about 16374.2416923655. The cubic root of 268115791 is about 644.8234125883.

The spelling of 268115791 in words is "two hundred sixty-eight million, one hundred fifteen thousand, seven hundred ninety-one".