268180949 has 4 divisors (see below), whose sum is σ = 272577420. Its totient is φ = 263784480.

The previous prime is 268180937. The next prime is 268180993. The reversal of 268180949 is 949081862.

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

It can be written as a sum of positive squares in 2 ways, for example, as 79530724 + 188650225 = 8918^2 + 13735^2 .

It is a cyclic number.

It is not a de Polignac number, because 268180949 - 2¹⁶ = 268115413 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 (268180909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2198144 + ... + 2198265.

It is an arithmetic number, because the mean of its divisors is an integer number (68144355).

Almost surely, 2^268180949 is an apocalyptic number.

It is an amenable number.

268180949 is a deficient number, since it is larger than the sum of its proper divisors (4396471).

268180949 is an equidigital number, since it uses as much as digits as its factorization.

268180949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4396470.

The product of its (nonzero) digits is 248832, while the sum is 47.

The square root of 268180949 is about 16376.2312208884. The cubic root of 268180949 is about 644.8756437539.

The spelling of 268180949 in words is "two hundred sixty-eight million, one hundred eighty thousand, nine hundred forty-nine".