17983387819 has 8 divisors (see below), whose sum is σ = 18122963040. Its totient is φ = 17844192576.

The previous prime is 17983387811. The next prime is 17983387861. The reversal of 17983387819 is 91878338971.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 17983387819 - 2³ = 17983387811 is a prime.

It is a super-2 number, since 2×17983387819² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (17983387811) 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 7 ways as a sum of consecutive naturals, for example, 397 + ... + 189649.

It is an arithmetic number, because the mean of its divisors is an integer number (2265370380).

Almost surely, 2^17983387819 is an apocalyptic number.

17983387819 is a deficient number, since it is larger than the sum of its proper divisors (139575221).

17983387819 is a wasteful number, since it uses less digits than its factorization.

17983387819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189989.

The product of its digits is 18289152, while the sum is 64.

The spelling of 17983387819 in words is "seventeen billion, nine hundred eighty-three million, three hundred eighty-seven thousand, eight hundred nineteen".