17958605449 has 8 divisors (see below), whose sum is σ = 18049687040. Its totient is φ = 17867618496.

The previous prime is 17958605419. The next prime is 17958605491. The reversal of 17958605449 is 94450685971.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17958605449 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 17958605393 and 17958605402.

It is not an unprimeable number, because it can be changed into a prime (17958605419) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 373612 + ... + 418930.

It is an arithmetic number, because the mean of its divisors is an integer number (2256210880).

Almost surely, 2^17958605449 is an apocalyptic number.

It is an amenable number.

17958605449 is a deficient number, since it is larger than the sum of its proper divisors (91081591).

17958605449 is a wasteful number, since it uses less digits than its factorization.

17958605449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47319.

The product of its (nonzero) digits is 10886400, while the sum is 58.

The spelling of 17958605449 in words is "seventeen billion, nine hundred fifty-eight million, six hundred five thousand, four hundred forty-nine".