849991188241 has 16 divisors (see below), whose sum is σ = 923016502800. Its totient is φ = 778077151488.

The previous prime is 849991188209. The next prime is 849991188301. The reversal of 849991188241 is 142881199948.

It can be written as a sum of positive squares in 8 ways, for example, as 108902640016 + 741088548225 = 330004^2 + 860865^2 .

It is not a de Polignac number, because 849991188241 - 2⁵ = 849991188209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (849991183241) 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, 629775 + ... + 1447963.

It is an arithmetic number, because the mean of its divisors is an integer number (57688531425).

Almost surely, 2^849991188241 is an apocalyptic number.

It is an amenable number.

849991188241 is a deficient number, since it is larger than the sum of its proper divisors (73025314559).

849991188241 is a wasteful number, since it uses less digits than its factorization.

849991188241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818868.

The product of its digits is 11943936, while the sum is 64.

The spelling of 849991188241 in words is "eight hundred forty-nine billion, nine hundred ninety-one million, one hundred eighty-eight thousand, two hundred forty-one".