852137909 has 8 divisors (see below), whose sum is σ = 983515008. Its totient is φ = 723171600.

The previous prime is 852137893. The next prime is 852137929. The reversal of 852137909 is 909731258.

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 852137909 - 2⁴ = 852137893 is a prime.

It is a super-2 number, since 2×852137909² = 1452278031909784562, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 852137909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (852137929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 601937 + ... + 603350.

It is an arithmetic number, because the mean of its divisors is an integer number (122939376).

Almost surely, 2^852137909 is an apocalyptic number.

It is an amenable number.

852137909 is a deficient number, since it is larger than the sum of its proper divisors (131377099).

852137909 is a wasteful number, since it uses less digits than its factorization.

852137909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1205395.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 852137909 is about 29191.4012853100. The cubic root of 852137909 is about 948.0617578768.

The spelling of 852137909 in words is "eight hundred fifty-two million, one hundred thirty-seven thousand, nine hundred nine".