17949935559 has 4 divisors (see below), whose sum is σ = 23933247416. Its totient is φ = 11966623704.

The previous prime is 17949935551. The next prime is 17949935567. The reversal of 17949935559 is 95553994971.

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

It is an interprime number because it is at equal distance from previous prime (17949935551) and next prime (17949935567).

It is not a de Polignac number, because 17949935559 - 2³ = 17949935551 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 17949935559.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17949935551) 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, 2991655924 + ... + 2991655929.

It is an arithmetic number, because the mean of its divisors is an integer number (5983311854).

Almost surely, 2^17949935559 is an apocalyptic number.

17949935559 is a deficient number, since it is larger than the sum of its proper divisors (5983311857).

17949935559 is an equidigital number, since it uses as much as digits as its factorization.

17949935559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5983311856.

The product of its digits is 68890500, while the sum is 66.

The spelling of 17949935559 in words is "seventeen billion, nine hundred forty-nine million, nine hundred thirty-five thousand, five hundred fifty-nine".