852191965 has 8 divisors (see below), whose sum is σ = 1026122328. Its totient is φ = 679425600.

The previous prime is 852191927. The next prime is 852192001. The reversal of 852191965 is 569191258.

It can be written as a sum of positive squares in 4 ways, for example, as 154281241 + 697910724 = 12421^2 + 26418^2 .

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

It is not a de Polignac number, because 852191965 - 2²⁷ = 717974237 is a prime.

It is a super-2 number, since 2×852191965² = 1452462290421122450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 289386 + ... + 292315.

It is an arithmetic number, because the mean of its divisors is an integer number (128265291).

Almost surely, 2^852191965 is an apocalyptic number.

It is an amenable number.

852191965 is a deficient number, since it is larger than the sum of its proper divisors (173930363).

852191965 is a wasteful number, since it uses less digits than its factorization.

852191965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581999.

The product of its digits is 194400, while the sum is 46.

The square root of 852191965 is about 29192.3271597178. The cubic root of 852191965 is about 948.0818044530.

The spelling of 852191965 in words is "eight hundred fifty-two million, one hundred ninety-one thousand, nine hundred sixty-five".