8191204468 has 6 divisors (see below), whose sum is σ = 14334607826. Its totient is φ = 4095602232.

The previous prime is 8191204459. The next prime is 8191204517. The reversal of 8191204468 is 8644021918.

It can be written as a sum of positive squares in only one way, i.e., 5733821284 + 2457383184 = 75722^2 + 49572^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1023900555 + ... + 1023900562.

Almost surely, 2^8191204468 is an apocalyptic number.

It is an amenable number.

8191204468 is a deficient number, since it is larger than the sum of its proper divisors (6143403358).

8191204468 is a wasteful number, since it uses less digits than its factorization.

8191204468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2047801121 (or 2047801119 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 8191204468 is about 90505.2731502425. The cubic root of 8191204468 is about 2015.8084233240.

The spelling of 8191204468 in words is "eight billion, one hundred ninety-one million, two hundred four thousand, four hundred sixty-eight".