8194232909 has 2 divisors, whose sum is σ = 8194232910. Its totient is φ = 8194232908.

The previous prime is 8194232887. The next prime is 8194232911. The reversal of 8194232909 is 9092324918.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6232628809 + 1961604100 = 78947^2 + 44290^2 .

It is a cyclic number.

It is not a de Polignac number, because 8194232909 - 2¹² = 8194228813 is a prime.

Together with 8194232911, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8194232939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4097116454 + 4097116455.

It is an arithmetic number, because the mean of its divisors is an integer number (4097116455).

Almost surely, 2^8194232909 is an apocalyptic number.

It is an amenable number.

8194232909 is a deficient number, since it is larger than the sum of its proper divisors (1).

8194232909 is an equidigital number, since it uses as much as digits as its factorization.

8194232909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 8194232909 is about 90522.0023474956. The cubic root of 8194232909 is about 2016.0568200325.

The spelling of 8194232909 in words is "eight billion, one hundred ninety-four million, two hundred thirty-two thousand, nine hundred nine".