8205194231 has 16 divisors (see below), whose sum is σ = 8883910560. Its totient is φ = 7533388800.

The previous prime is 8205194227. The next prime is 8205194269. The reversal of 8205194231 is 1324915028.

It is a cyclic number.

It is not a de Polignac number, because 8205194231 - 2² = 8205194227 is a prime.

It is a super-2 number, since 2×8205194231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8205194191 and 8205194200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8205194201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1973651 + ... + 1977803.

It is an arithmetic number, because the mean of its divisors is an integer number (555244410).

Almost surely, 2^8205194231 is an apocalyptic number.

8205194231 is a deficient number, since it is larger than the sum of its proper divisors (678716329).

8205194231 is a wasteful number, since it uses less digits than its factorization.

8205194231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4946.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 8205194231 is about 90582.5271837787. The cubic root of 8205194231 is about 2016.9553707507.

The spelling of 8205194231 in words is "eight billion, two hundred five million, one hundred ninety-four thousand, two hundred thirty-one".