820819846 has 16 divisors (see below), whose sum is σ = 1535040000. Its totient is φ = 319799880.

The previous prime is 820819841. The next prime is 820819861. The reversal of 820819846 is 648918028.

It is a junction number, because it is equal to n+sod(n) for n = 820819796 and 820819805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820819841) 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, 2664846 + ... + 2665153.

It is an arithmetic number, because the mean of its divisors is an integer number (95940000).

Almost surely, 2^820819846 is an apocalyptic number.

820819846 is a deficient number, since it is larger than the sum of its proper divisors (714220154).

820819846 is a wasteful number, since it uses less digits than its factorization.

820819846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5330019.

The product of its (nonzero) digits is 221184, while the sum is 46.

The square root of 820819846 is about 28649.9536823360. The cubic root of 820819846 is about 936.3019965382.

The spelling of 820819846 in words is "eight hundred twenty million, eight hundred nineteen thousand, eight hundred forty-six".