268981147 has 4 divisors (see below), whose sum is σ = 273390736. Its totient is φ = 264571560.

The previous prime is 268981099. The next prime is 268981169. The reversal of 268981147 is 741189862.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268981147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268981097 and 268981106.

It is not an unprimeable number, because it can be changed into a prime (268981187) 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 3 ways as a sum of consecutive naturals, for example, 2204703 + ... + 2204824.

It is an arithmetic number, because the mean of its divisors is an integer number (68347684).

Almost surely, 2^268981147 is an apocalyptic number.

268981147 is a deficient number, since it is larger than the sum of its proper divisors (4409589).

268981147 is an equidigital number, since it uses as much as digits as its factorization.

268981147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4409588.

The product of its digits is 193536, while the sum is 46.

The square root of 268981147 is about 16400.6447129374. The cubic root of 268981147 is about 645.5163999423.

The spelling of 268981147 in words is "two hundred sixty-eight million, nine hundred eighty-one thousand, one hundred forty-seven".