17841971113 has 8 divisors (see below), whose sum is σ = 17975468808. Its totient is φ = 17708822784.

The previous prime is 17841971101. The next prime is 17841971153. The reversal of 17841971113 is 31117914871.

It can be written as a sum of positive squares in 4 ways, for example, as 6586458649 + 11255512464 = 81157^2 + 106092^2 .

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-17841971113 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 17841971113.

It is not an unprimeable number, because it can be changed into a prime (17841971153) 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, 15631 + ... + 189547.

It is an arithmetic number, because the mean of its divisors is an integer number (2246933601).

Almost surely, 2^17841971113 is an apocalyptic number.

It is an amenable number.

17841971113 is a deficient number, since it is larger than the sum of its proper divisors (133497695).

17841971113 is a wasteful number, since it uses less digits than its factorization.

17841971113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174683.

The product of its digits is 42336, while the sum is 43.

The spelling of 17841971113 in words is "seventeen billion, eight hundred forty-one million, nine hundred seventy-one thousand, one hundred thirteen".