821116162 has 8 divisors (see below), whose sum is σ = 1231802316. Its totient is φ = 410515392.

The previous prime is 821116091. The next prime is 821116193. The reversal of 821116162 is 261611128.

It can be written as a sum of positive squares in 2 ways, for example, as 727974361 + 93141801 = 26981^2 + 9651^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×821116162² = 1348463502995220488, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 821116162.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 15238 + ... + 43294.

Almost surely, 2^821116162 is an apocalyptic number.

821116162 is a deficient number, since it is larger than the sum of its proper divisors (410686154).

821116162 is a wasteful number, since it uses less digits than its factorization.

821116162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42692.

The product of its digits is 1152, while the sum is 28.

The square root of 821116162 is about 28655.1245329697. The cubic root of 821116162 is about 936.4146513370.

The spelling of 821116162 in words is "eight hundred twenty-one million, one hundred sixteen thousand, one hundred sixty-two".