8119937809 has 4 divisors (see below), whose sum is σ = 8308773616. Its totient is φ = 7931102004.

The previous prime is 8119937773. The next prime is 8119937843. The reversal of 8119937809 is 9087399118.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8119937809 - 2²¹ = 8117840657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8119937809.

It is not an unprimeable number, because it can be changed into a prime (8119937879) 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, 94417839 + ... + 94417924.

It is an arithmetic number, because the mean of its divisors is an integer number (2077193404).

Almost surely, 2^8119937809 is an apocalyptic number.

It is an amenable number.

8119937809 is a deficient number, since it is larger than the sum of its proper divisors (188835807).

8119937809 is a wasteful number, since it uses less digits than its factorization.

8119937809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188835806.

The product of its (nonzero) digits is 979776, while the sum is 55.

The square root of 8119937809 is about 90110.6975280960. The cubic root of 8119937809 is about 2009.9452811354.

The spelling of 8119937809 in words is "eight billion, one hundred nineteen million, nine hundred thirty-seven thousand, eight hundred nine".