853812638 has 16 divisors (see below), whose sum is σ = 1464069984. Its totient is φ = 365821920.

The previous prime is 853812623. The next prime is 853812649. The reversal of 853812638 is 836218358.

853812638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76256 + ... + 86732.

It is an arithmetic number, because the mean of its divisors is an integer number (91504374).

Almost surely, 2^853812638 is an apocalyptic number.

853812638 is a deficient number, since it is larger than the sum of its proper divisors (610257346).

853812638 is a wasteful number, since it uses less digits than its factorization.

853812638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16307.

The product of its digits is 276480, while the sum is 44.

The square root of 853812638 is about 29220.0725187327. The cubic root of 853812638 is about 948.6824349959.

The spelling of 853812638 in words is "eight hundred fifty-three million, eight hundred twelve thousand, six hundred thirty-eight".