18758960995109 has 4 divisors (see below), whose sum is σ = 19195215902016. Its totient is φ = 18322706088204.

The previous prime is 18758960995097. The next prime is 18758960995123. The reversal of 18758960995109 is 90159906985781.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18758960995109 - 2⁴⁰ = 17659449367333 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 18758960995109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18758960991109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218127453389 + ... + 218127453474.

It is an arithmetic number, because the mean of its divisors is an integer number (4798803975504).

Almost surely, 2^{18758960995109} is an apocalyptic number.

It is an amenable number.

18758960995109 is a deficient number, since it is larger than the sum of its proper divisors (436254906907).

18758960995109 is an equidigital number, since it uses as much as digits as its factorization.

18758960995109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 436254906906.

The product of its (nonzero) digits is 440899200, while the sum is 77.

The spelling of 18758960995109 in words is "eighteen trillion, seven hundred fifty-eight billion, nine hundred sixty million, nine hundred ninety-five thousand, one hundred nine".