6849816143 has 4 divisors (see below), whose sum is σ = 6995556960. Its totient is φ = 6704075328.

The previous prime is 6849816133. The next prime is 6849816157. The reversal of 6849816143 is 3416189486.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3416189486 = 2 ⋅1708094743.

It is a cyclic number.

It is not a de Polignac number, because 6849816143 - 2⁸ = 6849815887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6849816091 and 6849816100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6849816133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72870338 + ... + 72870431.

It is an arithmetic number, because the mean of its divisors is an integer number (1748889240).

Almost surely, 2^6849816143 is an apocalyptic number.

6849816143 is a deficient number, since it is larger than the sum of its proper divisors (145740817).

6849816143 is a wasteful number, since it uses less digits than its factorization.

6849816143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145740816.

The product of its digits is 995328, while the sum is 50.

The square root of 6849816143 is about 82763.6160580240. The cubic root of 6849816143 is about 1899.1516196713.

The spelling of 6849816143 in words is "six billion, eight hundred forty-nine million, eight hundred sixteen thousand, one hundred forty-three".