816642183 has 16 divisors (see below), whose sum is σ = 1269804800. Its totient is φ = 466652088.

The previous prime is 816642181. The next prime is 816642193. The reversal of 816642183 is 381246618.

816642183 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 816642183 - 2¹ = 816642181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (816642181) 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, 395785 + ... + 397842.

It is an arithmetic number, because the mean of its divisors is an integer number (79362800).

Almost surely, 2^816642183 is an apocalyptic number.

816642183 is a deficient number, since it is larger than the sum of its proper divisors (453162617).

816642183 is an equidigital number, since it uses as much as digits as its factorization.

816642183 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 793651 (or 793637 counting only the distinct ones).

The product of its digits is 55296, while the sum is 39.

The square root of 816642183 is about 28576.9519543285. The cubic root of 816642183 is about 934.7108194706.

The spelling of 816642183 in words is "eight hundred sixteen million, six hundred forty-two thousand, one hundred eighty-three".