821853350 has 12 divisors (see below), whose sum is σ = 1528647324. Its totient is φ = 328741320.

The previous prime is 821853349. The next prime is 821853371. The reversal of 821853350 is 53358128.

It is a self number, because there is not a number n which added to its sum of digits gives 821853350.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8218484 + ... + 8218583.

It is an arithmetic number, because the mean of its divisors is an integer number (127387277).

Almost surely, 2^821853350 is an apocalyptic number.

821853350 is a deficient number, since it is larger than the sum of its proper divisors (706793974).

821853350 is a wasteful number, since it uses less digits than its factorization.

821853350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16437079 (or 16437074 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 35.

The square root of 821853350 is about 28667.9847565189. The cubic root of 821853350 is about 936.6948013709.

The spelling of 821853350 in words is "eight hundred twenty-one million, eight hundred fifty-three thousand, three hundred fifty".