853728261 has 4 divisors (see below), whose sum is σ = 1138304352. Its totient is φ = 569152172.

The previous prime is 853728247. The next prime is 853728263. The reversal of 853728261 is 162827358.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 853728261 - 2¹⁴ = 853711877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (853728263) 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, 142288041 + ... + 142288046.

It is an arithmetic number, because the mean of its divisors is an integer number (284576088).

Almost surely, 2^853728261 is an apocalyptic number.

It is an amenable number.

853728261 is a deficient number, since it is larger than the sum of its proper divisors (284576091).

853728261 is a wasteful number, since it uses less digits than its factorization.

853728261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284576090.

The product of its digits is 161280, while the sum is 42.

The square root of 853728261 is about 29218.6286639192. The cubic root of 853728261 is about 948.6511831688.

The spelling of 853728261 in words is "eight hundred fifty-three million, seven hundred twenty-eight thousand, two hundred sixty-one".