8199194413 has 4 divisors (see below), whose sum is σ = 8420794300. Its totient is φ = 7977594528.

The previous prime is 8199194327. The next prime is 8199194429. The reversal of 8199194413 is 3144919918.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7255291684 + 943902729 = 85178^2 + 30723^2 .

It is a cyclic number.

It is not a de Polignac number, because 8199194413 - 2⁹ = 8199193901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8199194713) 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 3 ways as a sum of consecutive naturals, for example, 110799888 + ... + 110799961.

It is an arithmetic number, because the mean of its divisors is an integer number (2105198575).

Almost surely, 2^8199194413 is an apocalyptic number.

It is an amenable number.

8199194413 is a deficient number, since it is larger than the sum of its proper divisors (221599887).

8199194413 is a wasteful number, since it uses less digits than its factorization.

8199194413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221599886.

The product of its digits is 279936, while the sum is 49.

The square root of 8199194413 is about 90549.4031620308. The cubic root of 8199194413 is about 2016.4636368729.

The spelling of 8199194413 in words is "eight billion, one hundred ninety-nine million, one hundred ninety-four thousand, four hundred thirteen".