852109645 has 8 divisors (see below), whose sum is σ = 1023113880. Its totient is φ = 681299520.

The previous prime is 852109607. The next prime is 852109691. The reversal of 852109645 is 546901258.

It can be written as a sum of positive squares in 4 ways, for example, as 106874244 + 745235401 = 10338^2 + 27299^2 .

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

It is not a de Polignac number, because 852109645 - 2⁹ = 852109133 is a prime.

It is a super-3 number, since 3×852109645³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 852109598 and 852109607.

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, 38686 + ... + 56575.

It is an arithmetic number, because the mean of its divisors is an integer number (127889235).

Almost surely, 2^852109645 is an apocalyptic number.

It is an amenable number.

852109645 is a deficient number, since it is larger than the sum of its proper divisors (171004235).

852109645 is a wasteful number, since it uses less digits than its factorization.

852109645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97055.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 852109645 is about 29190.9171661323. The cubic root of 852109645 is about 948.0512758826.

The spelling of 852109645 in words is "eight hundred fifty-two million, one hundred nine thousand, six hundred forty-five".