6491838 has 16 divisors (see below), whose sum is σ = 13130640. Its totient is φ = 2139456.

The previous prime is 6491833. The next prime is 6491857. The reversal of 6491838 is 8381946.

It is a junction number, because it is equal to n+sod(n) for n = 6491796 and 6491805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6491833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5545 + ... + 6612.

It is an arithmetic number, because the mean of its divisors is an integer number (820665).

Almost surely, 2^6491838 is an apocalyptic number.

6491838 is an abundant number, since it is smaller than the sum of its proper divisors (6638802).

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

6491838 is a wasteful number, since it uses less digits than its factorization.

6491838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12251.

The product of its digits is 41472, while the sum is 39.

The square root of 6491838 is about 2547.9085540890. The cubic root of 6491838 is about 186.5474103629.

The spelling of 6491838 in words is "six million, four hundred ninety-one thousand, eight hundred thirty-eight".