849444193831 has 8 divisors (see below), whose sum is σ = 894195740720. Its totient is φ = 804697042752.

The previous prime is 849444193777. The next prime is 849444193837. The reversal of 849444193831 is 138391444948.

849444193831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 849444193831 - 2⁹ = 849444193319 is a prime.

It is a super-2 number, since 2×849444193831² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (849444193837) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 698550 + ... + 1478803.

It is an arithmetic number, because the mean of its divisors is an integer number (111774467590).

Almost surely, 2^849444193831 is an apocalyptic number.

849444193831 is a deficient number, since it is larger than the sum of its proper divisors (44751546889).

849444193831 is a wasteful number, since it uses less digits than its factorization.

849444193831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2197905.

The product of its digits is 11943936, while the sum is 58.

The spelling of 849444193831 in words is "eight hundred forty-nine billion, four hundred forty-four million, one hundred ninety-three thousand, eight hundred thirty-one".