852991218 has 24 divisors (see below), whose sum is σ = 1956862908. Its totient is φ = 267604992.

The previous prime is 852991193. The next prime is 852991259. The reversal of 852991218 is 812199258.

It can be written as a sum of positive squares in 2 ways, for example, as 659308329 + 193682889 = 25677^2 + 13917^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1393471 + ... + 1394082.

Almost surely, 2^852991218 is an apocalyptic number.

852991218 is an abundant number, since it is smaller than the sum of its proper divisors (1103871690).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

852991218 is a wasteful number, since it uses less digits than its factorization.

852991218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2787578 (or 2787575 counting only the distinct ones).

The product of its digits is 103680, while the sum is 45.

The square root of 852991218 is about 29206.0133876570. The cubic root of 852991218 is about 948.3781071978.

The spelling of 852991218 in words is "eight hundred fifty-two million, nine hundred ninety-one thousand, two hundred eighteen".