849742218 has 32 divisors (see below), whose sum is σ = 2033572800. Its totient is φ = 261458928.

The previous prime is 849742211. The next prime is 849742219. The reversal of 849742218 is 812247948.

It is not an unprimeable number, because it can be changed into a prime (849742211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604528 + ... + 605931.

It is an arithmetic number, because the mean of its divisors is an integer number (63549150).

Almost surely, 2^849742218 is an apocalyptic number.

849742218 is an abundant number, since it is smaller than the sum of its proper divisors (1183830582).

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

849742218 is a wasteful number, since it uses less digits than its factorization.

849742218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210483 (or 1210477 counting only the distinct ones).

The product of its digits is 258048, while the sum is 45.

The square root of 849742218 is about 29150.3382141614. The cubic root of 849742218 is about 947.1724672290.

The spelling of 849742218 in words is "eight hundred forty-nine million, seven hundred forty-two thousand, two hundred eighteen".