19117017141 has 4 divisors (see below), whose sum is σ = 25489356192. Its totient is φ = 12744678092.

The previous prime is 19117017137. The next prime is 19117017169. The reversal of 19117017141 is 14171071191.

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 19117017141 - 2² = 19117017137 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19117016141) 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, 3186169521 + ... + 3186169526.

It is an arithmetic number, because the mean of its divisors is an integer number (6372339048).

Almost surely, 2^19117017141 is an apocalyptic number.

It is an amenable number.

19117017141 is a deficient number, since it is larger than the sum of its proper divisors (6372339051).

19117017141 is an equidigital number, since it uses as much as digits as its factorization.

19117017141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6372339050.

The product of its (nonzero) digits is 1764, while the sum is 33.

The spelling of 19117017141 in words is "nineteen billion, one hundred seventeen million, seventeen thousand, one hundred forty-one".