17950245493 has 4 divisors (see below), whose sum is σ = 17970621228. Its totient is φ = 17929869760.

The previous prime is 17950245473. The next prime is 17950245517. The reversal of 17950245493 is 39454205971.

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 8263355409 + 9686890084 = 90903^2 + 98422^2 .

It is a cyclic number.

It is not a de Polignac number, because 17950245493 - 2⁵ = 17950245461 is a prime.

It is a super-3 number, since 3×17950245493³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17950245403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10186546 + ... + 10188307.

It is an arithmetic number, because the mean of its divisors is an integer number (4492655307).

Almost surely, 2^17950245493 is an apocalyptic number.

It is an amenable number.

17950245493 is a deficient number, since it is larger than the sum of its proper divisors (20375735).

17950245493 is an equidigital number, since it uses as much as digits as its factorization.

17950245493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20375734.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The spelling of 17950245493 in words is "seventeen billion, nine hundred fifty million, two hundred forty-five thousand, four hundred ninety-three".