261882849 has 8 divisors (see below), whose sum is σ = 349386912. Its totient is φ = 174483680.

The previous prime is 261882839. The next prime is 261882883. The reversal of 261882849 is 948288162.

261882849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 261882849 - 2⁷ = 261882721 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 261882798 and 261882807.

It is not an unprimeable number, because it can be changed into a prime (261882839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20199 + ... + 30524.

It is an arithmetic number, because the mean of its divisors is an integer number (43673364).

Almost surely, 2^261882849 is an apocalyptic number.

It is an amenable number.

261882849 is a deficient number, since it is larger than the sum of its proper divisors (87504063).

261882849 is a wasteful number, since it uses less digits than its factorization.

261882849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52447.

The product of its digits is 442368, while the sum is 48.

The square root of 261882849 is about 16182.7948451434. The cubic root of 261882849 is about 639.7874041597.

The spelling of 261882849 in words is "two hundred sixty-one million, eight hundred eighty-two thousand, eight hundred forty-nine".