8242561836 has 48 divisors (see below), whose sum is σ = 22494326400. Its totient is φ = 2602913616.

The previous prime is 8242561829. The next prime is 8242561871. The reversal of 8242561836 is 6381652428.

8242561836 is a `hidden beast` number, since 8 + 2 + 4 + 2 + 561 + 83 + 6 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 8242561791 and 8242561800.

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 15 ways as a sum of consecutive naturals, for example, 2006370 + ... + 2010473.

It is an arithmetic number, because the mean of its divisors is an integer number (468631800).

Almost surely, 2^8242561836 is an apocalyptic number.

It is an amenable number.

8242561836 is an abundant number, since it is smaller than the sum of its proper divisors (14251764564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8242561836 is a wasteful number, since it uses less digits than its factorization.

8242561836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4016875 (or 4016867 counting only the distinct ones).

The product of its digits is 552960, while the sum is 45.

The square root of 8242561836 is about 90788.5556444203. Note that the first 3 decimals coincide. The cubic root of 8242561836 is about 2020.0125669904.

The spelling of 8242561836 in words is "eight billion, two hundred forty-two million, five hundred sixty-one thousand, eight hundred thirty-six".